Unit Test — Unit test

Question 1

It took the race car 22 minutes to travel 114.4 kilometers. At what rate did the car travel? Use the formula , where r is the rate, d is the distance, and t is the time. Round your answer to the nearest tenth.

Revolt · Accepted Answer

5.2 kilometers per minute

Question 2

Which expression correctly represents “twice the sum of four and a number”?

Revolt · Accepted Answer

2 (4 + n)

Question 3

Which description is paired with its correct expression?

Revolt · Accepted Answer

twice the difference of nine and a number squared;

Question 4

Mrs. Nelson asked students in her class to translate the statement “Remy lost some of the $14 his mom gave him” into an algebraic expression. Four students’ solutions are shown below.Alice: He had $14, then he lost (subtraction) an unknown amount (x).Bobby: He had an unknown amount of money (x) and he lost (subtraction) $14.Camila: He had $14 more than (>) the unknown amount (x) he lost.Daniel: He had $14 less than (<) the unknown amount (x) he lost.Which student’s solution is correct?

Revolt · Accepted Answer

Alice

Question 5

Which two operations are needed to write the expression that represents “four times the difference of a number and three”?

Revolt · Accepted Answer

multiplication and subtraction

Unit Test — Unit test Answers

More from this Course

TRY EDGENUITY HACKS