Unit 7 Practice Problems

• 5

• 6

• 10

• 12

• 25

• 50

• 75

• 100

• n = 50

• n = 125

• n = 150

• n = 200

• n = 250

• n = 74

• n = 194

• n = 226

• n = 241

• n = 267

The cost to rent a scooter is $20. Additionally, $0.15 is charged per mile, m, driven. Which expression represents the total rental cost, in dollars?

• 20m - 0.15

• 20m + 0.15

• 0.15m - 20

• 0.15m + 20

The fee for a guided tour of a historical site is $25. An additional $1.50 is charged for each souvenir, s, purchased during the tour. Which expression can be used to determine the total cost, in dollars, of the guided tour including souvenirs?

• 25s - 1.50

• 25s + 1.50

• 1.50s - 25

• 1.50s + 25

A car drove for 3 hours and traveled 180 miles. Which equations can be used to find the average speed, s, in miles per hour? Select each correct answer.

• s = 180 ÷ 3

• 3s = 180

• 180s = 3

• s = 3 ÷ 180

A car drove for 3 hours and traveled 180 miles. How many miles did the car drive per hour?

Mathematical Equivalence

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A baker started the day with a full stock of cupcakes. After selling 83 cupcakes, the baker had 28 cupcakes left. Which equations can be used to find the number of cupcakes, n, the baker started with? Select each correct answer.

• n = 83 - 28

• n - 83 = 28

• n + 83 = 28

• n + 28 = 83

• n = 28 + 83

A baker started the day with a full stock of cupcakes. After selling 83 cupcakes, the baker had 28 cupcakes left. How many cupcakes did the baker start with?

Mathematical Equivalence

OFF