7th Expressions and Equations Review

Clara goes miniature golfing. She pays $7.50 for an admission ticket and $6.25 for each round she golfs. The total amount Clara pays for admission and the number of rounds she golfs is $26.25. Which equation can be used to determine the number of rounds, x, that Clara golfs?

•   6.25x + 7.50 = 26.25

•   6.25x − 7.50 = 26.25

•   7.50x + 6.25 = 26.25

•   7.50x − 6.25 = 26.25

Which expression is equivalent to 7a − 8 − 12a + 4?

•   -9a

•   31a

•   -5a − 4

•   19a + 12

A worker at a snack stand opened a new box of cups. The first day, the worker used 30 cups from the box. The second day, the worker used 15% of the remaining cups in the box. A total of 90 cups were used on the second day. What was the original number of cups in the box before any cups were used?

• 400

• 570

• 630

• 800

Bob buys eggs and potatoes at a store.

• He pays a total of $25.92.

• He pays $2.57 for the eggs.

• He buys 5 bags of potatoes that each cost the same amount.

Which equation can be used to determine the cost, x, of each bag of potatoes?

Which expression is equivalent to (−18) − 64n?

Which expression is equivalent to n + n − 0.18n?

Jordan prepares 200 name tags to use at a meeting. The number for each color of name tag is described below.

•  35% of the name tags are blue

• 3/8 of the name tags are yellow

•  all of the remaining name tags are red

How many of Jordan’s name tags are red?

• 55

• 90

• 110

• 145

The regular price of an item at a store is p dollars. The item is on sale for 20% off the regular price. Some of the expressions shown below represent the sale price, in dollars, of the item.

Expression A: 0.2p

Expression B: 0.8p

Expression C: 1 − 0.2p

Expression D: p − 0.2p

Expression E: p − 0.8p

Which two expressions each represent the sale price of the item?

•   Expression A and Expression E

•   Expression B and Expression C

•   Expression B and Expression D

•   Expression C and Expression D

•   0.000625

• 0.00025

• 0.065

• 0.025