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31.p=100h-2000

It costs $2,000 a month for Mia to rent space to run her law firm. She charges$100 per hour for legal advice. The equation above gives Mia’s profit, P, per month, after working h hour. How many hours does Mia have to work before she starts to make money each month?

A.20 hours

B.80hoursO

C.100hours

D.200hours

Correct answer: A Difficulty level: 3

32.C=1.5b+67.5

The total cost, C, in dollars, to produce b books is given by the equation below. What is the meaning of 1.5 in the equation?

A.1.5 books will cost $67.50 to produce. B.It costs an extra$1.50 for each book produced.

C.If you produce one book, you total cost will be $1.50 D.There is a flat fee of$1.50 to produce any number of books.

Correct answer: B Difficulty level: 4

33.B=0.55A

Jing is making homemade peanut butter. The equation above shows the amount of peanut butter yielded, B, in cups, for A cups of peanuts. What percentage of the volume of peanuts is lost when processing them into peanut butter?

A.0.55%

B.0.45%

C.55%

D.45%

Correct answer: D Difficulty level: 4

34.P=0.7c

A store is having a sale on every item purchased. Irina decides to take advantage of the sale and purchases a sweater. The equation that gives the after-sale price, P, of Irina’s sweater with an original cost, c, is shown above. What percent off the original cost did Original cost did Irina save?

A.3%

B.7%

C.30%

D.70%

Correct answer: C Difficulty level: 4

35.T=1200-0.06c

A print shop copies and prints documents in large volume for its customers. For a particular copy machine, the equation above gives the amount of toner, T, in grams, left after making c copies.

How many grams of toner are used per copy?

Correct answer: 0.06 Difficulty level: 4 