NC.7.EE.2 Exam Prep

A concert ticket costs $45. There's a special promotion offering 10% off for early bird purchases. A 4% service fee (calculated like a tax on the discounted price) is then added. Which expression represents the total cost of the concert ticket?

• 45(0.10)(0.04)

• 45(0.90)(1.04)

• 45(1.10)(1.04)

• 45(0.90)(0.04)

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NC.7.EE.2

The speed of a car is v miles per hour. If the car reduces its speed by 15%, which expression represents the new speed, in miles per hour?

• v - 0.15

• v - 15v

• v - 0.15v

• v - 15

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NC.7.EE.2

A bookstore reduces the price of all hardcover books by 12% during a sale. If a hardcover book is normally sold for b dollars, which expression represents the sale price of the book?

• 0.12b

• 0.88b

• 1.12b

• 12b

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NC.7.EE.2

The base of an isosceles triangle is 10 cm and each of the equal sides is y cm. Which expression would calculate the perimeter of the triangle?

• 10 + y

• 10y

• 10 + 2y

• 2(10 + y)

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NC.7.EE.2

The original price of a textbook is $150. A 4% sales tax is added to the price. Which expression represents the total amount a student would pay for the textbook?

• 150(0.04)

• 150(1.04)

• 150(1.40)

• 150(4)

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NC.7.EE.2

Kevin works at an appliance store. He makes $1,100 a month plus a 4.5% commission on the total price of appliances he sells. If he sold n dollars’ worth of appliances this month, which expression represents the total money Kevin earned?

• 1,100 + 0.045n

• 1,100 + 1.045n

• 1,100(0.045n)

• 1,100(1.045n)

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NC.7.EE.2

An admission ticket to an event costs y dollars. A 4% sales tax is charged on the ticket. Which expression represents the total amount to pay for the ticket?

• y + 0.04

• y + 1.04

• 0.04y

• 1.04y

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NC.7.EE.2

A company's annual profit was $75,000 last year. They project a 12% increase in profit for this year. Which expression represents the projected profit for this year?

• 75,000(0.12)

• 75,000(1.12)

• 75,000 + 0.12

• 75,000 + 1.12

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NC.7.EE.2

The number of subscribers to a streaming service was 1,500,000 at the beginning of the year. By the end of the year, the number of subscribers increased by 30%. Which expression represents the number of subscribers at the end of the year?

• 1,500,000 + 1.30

• 1,500,000 + 0.30

• 1,500,000(1.30)

• 1,500,000(1.30)

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NC.7.EE.2

During an end-of-season sale, all winter coats are reduced by 50%. If w represents the regular price of a winter coat, which expression could be used to calculate the sale price of the coat?

• w – 50

• w – 50w

• 0.5w

• 0.05w

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NC.7.EE.2