Meaning of Expressions

The cost of five games is $250. John has a coupon for 15% off. He then has to pay 8% tax. Which expression could John use to calculate the total cost of the five games?

• 250(0.15)(0.8)

• 250(0.85)(1.08)

• 250(1.15)(1.08)

• 250(1.23)

Sue is buying a new dress for x dollars. The sales tax is 6.5%. Which expression could also be used to find the total cost of the dress, including tax?

• 0.065x

• 0.65x

• 1.065x

• 65x

A store increased its price on TVs by 15%. If p represents the regular price of TVs, which expression could be used to find the new prices of the TVs?

• 0.15p

• 0.85p

• 1.15p

• 0.115p

The length of a rectangle is 15 cm and the width is w. Which expression would calculate the perimeter of the rectangle?

• w+ 15

• 2W + 15

• 2(15w)

• 2(w + 15)

Karl is buying a new couch for $600. She has to pay sales tax of 6.5%. Which expression would she use to calculate the final price of the couch?

• 600(0.065)

• 600(1.065)

• 600(1.65)

• 600(6.5)

Kanaiya works at a furniture store. She earns $1200 a month plus 5% commission on all the furniture she sells. She sold x dollars worth of furniture this month. Which expression represents the amount of money Kanaiya earns this month.

• 1200 + 0.05x

• 1200 + 1.05x

• 1200(0.05x)

• 1200(1.05x)

An item was purchased for m dollars. Sales tax is 7%. Which expression represents the total cost, including tax.

• m + 0.07

• m + 1.07

• 0.07m

• 1.07m

Before a raise, Sonja earned $250 each week at a restaurant. She received a 5% raise. Which expression represents Sonja's new earnings?

• 250(0.05)

• 250(1.05)

• 250 + 0.05

• 250 + 1.05

In 2018, attendance at a school increased 12% from the previous year. In 2017, attendance was 102 336 students. Which expression represents the attendance for the school in 2018?

• 102 336 + 1.12

• 102 336 + 0.12

• 102 336(1.12)

• 102 336(0.12)

At a store, all Playstations are on sale for 25% off. If x represents the regular price of Playstation, which expression could be used to calculate the sale price of a Playstation?

• x - 25

• x - 75

• 0.25x

• 0.75x