Simplify. Unless otherwise specified, assume that variables can represent any number.
A. 32
B. -10
C. ±10
D. 100
Answer: B
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Solve the problem.If Gloria received a 6 percent raise and is now making $22,260 a year, what was her salary before the raise? Round to the nearest dollar if necessary.
A. $21,000 B. $20,924 C. $20,260 D. $22,000
Round the number as indicated.9487 to the nearest ten
A. 9490 B. 9590 C. 9500 D. 9480
Convert to rectangular coordinates.
A. (6
, -6
)
B. (6
, 6
)
C. (-6
, 6
)
D. (-6
, -6
)
Solve the problem.The owners of a candy store want to sell, for $6 per pound, a mixture of chocolate-covered raisins, which usually sells for $3 per pound, and chocolate-covered macadamia nuts, which usually sells for $8 per pound. They have a 
barrel of the raisins. How many pounds of the nuts should they mix with the barrel of raisins so that they hit their target value of $6 per pound for the mixture?
A. 80 lb B. 75 lb C. 70 lb D. 65 lb