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Unit Test — Unit test Answers

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What is the equation and solution for the sentence? The sum of a number and thirty-one is one hundred thirteen.

A
Write the equation as and subtract 31 from both sides. The answer is 82.
Option A
B
Write the equation as and subtract 31 from both sides. The answer is 82.
Option B
C
Write the equation as and add 31 to both sides. The answer is 144.
Option C
D
Write the equation as and add 31 to both sides. The answer is 144.
Option D
22
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Lindsay has saved $134.75 to buy a tablet. How much more money does she need to save before she can buy the tablet? Write an equation and solve it by using the information in the table.

Question illustration
A
$1.48
B
$64.25
C
$164.25
D
$333.75
23

Which could be used to solve this equation?

Question illustration
A
Subtract from both sides of the equation.
Option A
B
3 and one-fifth minus 3 and one-fifth + n = 9 + 3 and one-fifth
Option B
C
Add to both sides of the equation.
Option C
D
9 + 3 and one-fifth = 12 and one-fifth
Option D
24

What procedure can be used to solve the equation , and what is the solution?

Question illustration
A
Multiply both sides by 11; the solution is 5,940.
B
Multiply by 11; the solution is 540.
Option B
C
Divide both sides by 11; the solution is 49.
D
Divide by 11; the solution is 540.
Option D
25

Marina can bicycle 19.5 miles in the same time it takes her to run 6 miles. She bikes 9 miles per hour faster than she runs. At what speed does Marina run? Distance (mi)Rate (mph)Time (hr)Bicycling19.5Running6r

Question illustration
A
4 mph
B
5 mph
C
9 mph
D
13 mph

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