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There are 25 problems. Problems #1–12 are Multiple Choice. Problems
#13–15 are Short Answer. (Work not required to be shown) Problems #16–25
are Short Answer with work required to be shown. MULTIPLE CHOICE 1.
Which of the corner points for the system of linear inequalities graphed
below maximizes the objective function P = 5x + 4y ? 1. _______ A. (0,
4) C. (1, 2) B. (3, 0) D. (2, 0) 2. Find the equation of the line
passing through (1, – 7) and (4, 1): 2. _______ A. 8x + 3y = – 13 B. 2x +
y = – 5 C. 2x – y = 9 D. 8x – 3y = 29 MATH 106 Finite Mathematics
2152-US1-4010-V1 Page 2 of 9 3. A survey of 15 randomly selected
students responded to the question “How many hours a day do you work on
MATH 106?” as follows: 3, 2, 2, 4, 6, 5, 2, 5, 1, 4, 2, 3, 2, 3, 4 .
Which histogram below accurately reflects the frequency distribution of
the 15 students’ responses? 3. ______ HISTOGRAM A HISTOGRAM C HISTOGRAM B
HISTOGRAM D 4. Identify the single row operation that transforms the
matrix as shown: 4. ________ [ 10 -4 -5 2 | 9 -4.5 ] ? [ -5 2 -5 2 |
-4.5 -4.5 ] A. 0.5??1 ? ??1 C. ??2 +??1 ? ??1 B. ??2 ? ??1 D. 3??2 +??1 ?
??1 5. The amount of money you should deposit in an account paying 8%
compounded quarterly in order to receive quarterly payments of $1000 for
the next 4 years can be determined using formula for: 5. _______ A.
Single-payment, simple interest B. Single-payment, compound interest C.
Sequence of payments: present value of an ordinary annuity D. Sequence
of payments: future value of an ordinary annuity 02461 2 3 4 5 602461 2 3
4 5 6024681 2 3 4 5 6024681 2 3 4 5 6MATH 106 Finite Mathematics
2152-US1-4010-V1 Page 3 of 9 6. – 7. The Black Entertainment Television
Company (BET) employs copy coordinators and programming analysts.
According to company data, a copy coordinator reviews 5 scripts and 3
show schedules per day, whereas a programming analyst reviews 2 scripts
and 7 show schedules per day. The company needs enough staff on hand to
review at least 12 scripts per day and at least 17 show schedules per
day. A copy coordinator makes $230 per day and a programming analyst
makes $190 per day. The company wants to minimize daily labor costs. Let
x represent number of copy coordinators and y represent number of
programming analysts. 6. Identify the daily production constraint for
scripts: 6. _______ A. 5?? +2?? = 12 C. 5?? +2?? = 12 B. 5?? +2?? = 17
D. 5?? +2?? = 17 7. State the objective function. 7. _______ A. ?? =
190?? +230?? C. ?? = 12?? +17?? B. ?? = 230?? +190?? D. ?? = 17?? +12??
8. In the dice game “Yahtzee”, five-of-a-kind gives the maximum score
for a single turn. What is the probability of getting 5 “5”s in a single
roll of 5 six-sided dice? 8. ________ A. 1 7776 (0.000129) / C. 1 1296
(0.000772) / B. 1 30 / (0.033333) D. 5 36 / (0.138889) 9. Maria
purchases a new home for $320,000. She makes a down payment of 20%, and
finances the rest with a 30-year fixed loan at an annual interest rate
of 3.75% compounded monthly. What is the amount of her monthly loan
payment to amortize the loan? 9. _______ A. $1481.97 C. $1511.11 B.
$1888.89 D. $1185.58 10. The mean time from prescription drop-off to
medicine pickup for a customer served at Heisenberg’s Pharmacy is 51
minutes, with a standard deviation of 17 minutes. Assuming a normal
distribution, what is the probability that a randomly chosen customer
experiences service done between 34 and 68 minutes? 10. ______ A. 0.6826
C. 0.3413 B. 0.4772 D. 0.5000 MATH 106 Finite Mathematics
2152-US1-4010-V1 Page 4 of 9 11. If K = {3, 7, 11, 15} and M = {7, 12,
15, 18}, list {??|?? ? ?? ?????? ?? ? ??} 11. _________ A. {Ø} C. { 7,
15 } B. {3, 7, 11, 12, 15, 18} D. {3, 7, 11, 15, 7, 12, 15, 18} 12.
Determine which region defines the solution region of the following
system of linear inequalities graphed below:12. ________2?? -5?? = -3
-3?? +?? = -2 A. Region I C. Region III B. Region II D. Region IV
IIIIIIIVMATH 106 Finite Mathematics 2152-US1-4010-V1 Page 5 of 9 SHORT
ANSWER (work NOT required to be shown) 13. For the linear equation 8??
+3?? = 72: a. Determine the slope: _______________________ b. Determine x
– intercept if it exists: _______________________ c. Determine y –
intercept if it exists: _______________________ d. Express equation in
slope-intercept form: _______________________ 14. 1000 randomly-selected
respondents to a TV marketing survey were asked their age in years (18
to 39 or 40+) and the kind of TV show most often watched. Following
table was obtained. Show Most Watched on TVViewer Age 18 – 39Viewer Age
40 +TotalComedy 208 88 296 Drama 150 74 224 News 32 140 172 Sports 228
80 308 Total 618 382 1000 (Report your answers as fractions or as
decimal values rounded to the nearest hundredth.) Find the probability
that a randomly-selected respondent most often watches: (a) drama shows
and is age 18 – 39. Answer: ______________ (b) drama shows or is age 18 –
39. Answer: ______________ (c) drama shows given that viewer is age 18 –
39. Answer: ______________ 15. Let ??(??) = 60, ??(??) = 75, ??(?????) =
113, and ??(??) = 150. a. Determine ??(??’) :
___________________________________ b. Determine ??(??n??) :
___________________________________ c. Determine ??(??’ n??’):
___________________________________ MATH 106 Finite Mathematics
2152-US1-4010-V1 Page 6 of 9 SHORT ANSWER, with work required to be
shown, as indicated. 16. Eighteen people are summoned to jury duty. 10
are women and 8 are men. (a) In how many ways can 12 jurists be randomly
selected out of the 18 people? Show work. (b) In how many ways can 12
jurists be chosen, if 8 must be women and 4 must be men? Show work. (c)
If 12 jurists are randomly selected from the 18 people, what is the
probability that 4 are men and 8 are women? Round answer to nearest
ten-thousandth (4 places after decimal). Show work.
______________________________________________________________________________17.
Cara needs $9,000 in 11 years. What amount can she deposit at the end
of each quarter at 8% annual interest compounded quarterly so she will
have her $9,000? Show work. A. $125.19 C. $134.01 B. $129.49 D. $540.69
18. Solve the system of equations using substitution, elimination by
addition, or augmented matrix methods (your choice). Show work. 3?? -2??
= -2 -4?? +3?? = 1
______________________________________________________________________________MATH
106 Finite Mathematics 2152-US1-4010-V1 Page 7 of 9 19. According to
the US Census Bureau, “United States Census 2010”, 33 million Americans
were age 65 or older in 1995; an amount which climbed to 40 million in
2010. (a) Which of the following linear equations could be used to
predict number of Americans age 65 or older (in millions) “y” in a given
year “x”, where x = 0 represents the year 1995? Explain/show work. ??.
?? = 7 15 ?? +33 ??. ?? = 15 7 ?? +33 ??. ?? =7 15?? +1995 ??. ?? =15
7?? +1995 (b) Use the equation from part (a) to predict the number of
Americans age 65 or older (in millions) in the year 2040. Round answer
to nearest tenth of a million people. Show work. (c) Fill in the blanks
to interpret the slope of the equation: The rate of change of number of
Americans age 65 or older with respect to time is ______________________
per ________________. (Include units of measurement.) 20. A local car
rental agency charted daily demand as shown in the following table:
Number of customers 8 10 12 14 16 Probability 0.3 0.2 0.3 0.1 0.1 Find
the expected number of customers. Show
work______________________________________________________________________________21.
According to a recent report, 0.10 is the probability that a
randomly-selected American citizen knows that Janet Yellen is the Chair
of the Federal Reserve Board of the US Government. Nine Americans are
randomly selected. Find the probability that exactly 3 of the 9
Americans selected identifies Ms Yellen as the Chair of the Federal
Reserve Board. Round answer to the nearest thousandth (three places
after decimal). Show work. MATH 106 Finite Mathematics 2152-US1-4010-V1
Page 8 of 9
______________________________________________________________________________2
2. The feasible region shown below is bounded by lines x + y = 2, 5x – y
= 3, and y = 0. Find the coordinates of corner point A. Show work. 23. A
network security specialist records the number of incoming e-mails
containing links that six randomly-selected network users receive in a
day. Numbers are 27, 23, 19, 38, 27, and 22. (a) State the mode (if one
exists). (b) Find the median. Show work/explanation. (c) Determine the
sample mean. Show work (d) Using the sample mean found in part (c), and
given that the sample standard deviation of the data set above is 6.6,
what percentage of the data set falls within one standard deviation of
the mean? Show work/explanation. (d) _______ A. 34.2% C. 66.7% B. 83.3%
D. 68.3% MATH 106 Finite Mathematics 2152-US1-4010-V1 Page 9 of 9 24.
You have $5000 to invest in a single payment. Which is the better
investment: 8.7% compounded annually or 8.4% compounded monthly? Show
work 25. A dietitian surveyed her group of 100 patients and found that
most of them ate fast food yesterday. 45 patients said they ate at
“Greasies” yesterday. 55 patients said they ate at “Pluckies” yesterday.
15 patients said they ate at both “Greasies” and “Pluckies” yesterday.
(a) What is the probability that a single randomly-selected patient
either ate at “Greasies” or at “Pluckies” (but not both) yesterday? Show
work. (b) Let G = {patients who ate at “Greasies”} and P = {patients
who ate at “Pluckies”}. Determine the number of attendees belonging to
each of the regions I, II, III, IV. Region I: ________ Region II:
__________ Region III: _________ Region
