Session 1.3 Math Review

The length of a certain rectangle is 5 units more than the width. Write an equation that represents the length, l, in terms of the width, w, for this rectangle.

• l = 5w

• 5 + l = w

• l = w + 5

• l + w = 5

An electrician has 42.3 meters of wire to use on a job. On the first day, she uses 14.742 meters of the wire. How many meters of wire does she have remaining after the first day?

• 27. 27. 442

• 27. 27. 558

• 27. 27. 642

• 27. 27. 658

• 33

• 34

• 35

• 36

Each of the pairs of values in the table has the same ratio.

What is the missing value in the table?

Scott earns $15 for each birdhouse he sells. He uses the expression 15x to calculate his earnings, in dollars. What is the meaning of the variable x in Scott's expression?

• the number of birdhouses he sells

• the total amount of money he earns

• the amount of money he earns per birdhouse

• the number of hours it takes to make each birdhouse