Math 7 Unit 2 Test Review

Which percent change represents a percent increase?

• Original amount 978

  New amount 118

  Percent change 87%

• Original amount 574

  New amount 678

  Percent change 18%

• Original amount 1,055

  New amount 1,000

  Percent change 5%

• Original amount 1,254

  New amount 1,045

  Percent change 17%

What is the approximate percent decrease when a fish count goes down from 850 to 500?

• The percent decrease is approximately 40%.

• The percent decrease is approximately 70%.

• The percent decrease is approximately 140%.

• The percent decrease is approximately 240%.

A girl’s club held a fundraiser last year and raised $600 for the local soup kitchen. This year they raised $960. What is the percent change in the total amount raised by the girl’s club?

• The percent change is 0.38%.

• The percent change is 0.6%.

• The percent change is 38%.

• The percent change is 60%.

The owner of a health club decides to reduce the $35 membership fee by $5. What is the approximate percent decrease in the fee?

• The percent decrease is approximately 0.14%.

• The percent decrease is approximately 0.85%.

• The percent decrease is approximately 14%.

• The percent decrease is approximately 85%.

Nadal invests $5,678 at an annual interest rate of 4.5 percent for 6 years. For which variable can Nadal substitute the value 5,678 in the simple interest formula?

• I

• p

• r

• t

The following information is known about a savings account.

Time = 6 years

Interest rate = 1.9%

Principal = $850

What amount of simple interest will be earned?

• $16.15

• $96.90

• $946.90

• $9,690.00

Meredith borrows $12,560 and pays 2 percent simple interest each year for 4 years. What is the total amount of interest that she will pay on the loan?

• $251.20

• $1,004.80

• $11,555.20

• $13,564.80

Gene paid a deposit on a leased car. The deposit earns 2.8 percent simple annual interest. At the end of the year, the interest that is earned is $22.40. What was the amount of the original deposit?

• $0.63

• $80.00

• $62.72

• $800.00

Lena told her mother that the jeans that she bought were on sale for 10 percent off and she had saved $8.25 on them.

Lena’s mother wanted to know the price of the jeans before the discount to determine if Lena was shopping for jeans that were too expensive. What was the price of the jeans before the discount?

• $41.25

• $74.25

• $82.50

• $90.75

Nikhil gets paid a 5 percent commission on every pair of shoes that he sells. He earned $1.00 on the last pair of shoes that he sold. The expression that can be used to represent x, the price of the shoes, is

 $0.05x=1$  
What was the price of the shoes?

• $5.00

• $10.00

• $20.00

• $25.00