AnswersTX-College Prep Math AUnit Test

Unit Test — Cumulative exam Answers

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21
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Use the metric table to help complete the statement.Metric Tablekilo-hecto-deka-unitdeci-centi-milli-1,0001001010.10.010.001To convert 67.9 decimeters to millimeters,

A
multiply 67.9 by 10.
B
multiply 67.9 by 102.
C
divide 67.9 by 102.
D
divide 67.9 by 10.
22
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Which situation can be represented by a single expression?

A
The product of and a number is 16.
Option A
B
of a number
Option B
C
Half of a number is 15.
D
The difference of 20 and a number is 14.
23

Which phrase could the expression represent?

Question illustration
A
a number less than four
B
the difference of a number and four
C
the sum of a number and four
D
four more than a number
24

What is the value of x in the equation ?

Question illustration
A
–50
B
–40
C
–8
D
–6
25

Alejandro uses the steps below to convert to a percent. Which best explains Alejandro’s error?

Question illustration
A
The division was computed incorrectly.
B
The division was completed in the incorrect order.
C
The decimal was moved to the right too many times.
D
The decimal was moved to the right instead of the left.
26

Aaron estimated that 148% of 333 is 495. Is his estimate reasonable?

A
No, because his calculation should be 140% of 340.
B
No, because his calculation should be 150% of 340.
C
Yes, because his calculation should be 140% of 330.
D
Yes, because his calculation should be 150% of 330.
27

Eva buys a piece of red fabric that is 5.6 meters long and a piece of yellow fabric that is 2.8 meters long. How long are the two pieces of fabric together in millimeters? Use the metric table to help answer the question.Metric Tablekilo-hecto-deka-unitdeci-centi-milli-1,0001001010.10.010.001

A
8.4 millimeters
B
84 millimeters
C
8,400 millimeters
D
84,000 millimeters
28

Which expression is equivalent to (4 + 7i)(3 + 4i)?

A
–16 + 37i
B
12 – 28i
C
16 – 37i
D
37 + 16i
29

While Raj was in Italy he heard the weather forecaster say it was going to be that day. Raj wasn’t sure if that was hot or cold, so he converted the temperature to degrees Fahrenheit. What is the temperature in degrees Fahrenheit? Use the formula, , where F is the number of degrees in Fahrenheit and C is the number of degrees in Celsius. Round your answer to the nearest whole number.

Question illustration
A
25
Option A
B
40
Option B
C
57
Option C
D
83
Option D
30

The government keeps track of fuel prices in time across the United States. The chart shows the average gasoline price by month for 2010.Average U.S. Gasoline PriceDatePrice per gallonin dollarsApril 20102.725May 20102.87June 20102.674July 20102.67August 20102.74Which list shows the prices of gasoline from the least expensive to most expensive?

A
2.67, 2.74, 2.87, 2.674, 2.725
B
2.67, 2.674, 2.725, 2.74, 2.87
C
2.67, 2.674, 2.74, 2.725, 2.87
D
2.674, 2.67, 2.74, 2.725, 2.87
31

What is the value of the expression below?

Question illustration
A
2.5
B
4.875
C
11.375
D
26.4
32

What is the value of d in the equation?

Question illustration
A
4
B
8
C
18 and two-thirds
Option C
D
24 and one-half
Option D
33

Mrs. Nygaard needs 12 hours to grade all of her students’ projects. She made a chart to show how much time she could spend grading the projects during the week.Project GradingDayHours GradingMondayTuesdayWednesdayThursday2FridayHow many hours will Mrs. Nygaard need to work over the weekend to finish grading the projects?

Question illustration
A
hours
Option A
B
hours
Option B
C
hours
Option C
D
hours
Option D
34

Which statement is true about the value of ?

Question illustration
A
StartAbsoluteValue negative 14 EndAbsoluteValue = negative 14
Option A
B
StartAbsoluteValue negative 14 EndAbsoluteValue less-than 14
Option B
C
It is the distance between –14 and 0 on the number line.
D
It is the distance between –14 and 14 on the number line.
35

Kyle’s bank statement shows a balance of –$18.50. Which describes the magnitude, or size, of the debt in dollars?

A
–$37.00
B
–$18.50
C
$18.50
D
$37.00
36

Andre hit 46 balls at practice. He hit no fewer than 20 less than double the number of hits Jason had. Which inequality represents the situation if j represents the number of hits Jason had?

A
46 minus 20 less-than 2 j
Option A
B
2 j minus 20 less-than-or-equal-to 46
Option B
C
46 minus 20 less-than-or-equal-to 2 j
Option C
D
2 j minus 20 greater-than-or-equal-to 46
Option D
37

Which statement about numbers is true?

A
All integers are natural numbers.
B
All rational numbers are integers.
C
All natural numbers are whole numbers.
D
All rational numbers are natural numbers.
38

Which list of numbers is shown on the number line below?

Question illustration
A
Negative 2.5, 1 and three-fourths, 50 percent, 1.5
Option A
B
Negative 2.5, negative 1 and one-third, 50 percent, 1.5
Option B
C
Negative 2.5, negative 1 and three-fourths, 25 percent, 1.5
Option C
D
Negative 2.5, negative 1 and one-third, 25 percent, 1.5
Option D
39

Mary bought a smart phone and has $11.43 left. How much did Mary have before she bought the smart phone? Write an equation and solve it by using the information in the table.

Question illustration
A
$27.57
B
$50.43
C
$66.57
D
$89.43
40

Which fraction is equivalent to ?

Question illustration
A
StartFraction 3 Over 8 EndFraction
Option A
B
StartFraction 2 Over 8 EndFraction
Option B
C
StartFraction 3 Over 24 EndFraction
Option C
D
StartFraction 4 Over 24 EndFraction
Option D

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