If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."{(-2, 4), (2, -4), (8, -2), (-8, 2)}
A. Not one-to-one
B. {(4, -2), (-4, 2), (-2, -8), (2, 8)}
C. {(4, -2), (-4, 2), (8, -2), (2, -8)}
D. {(4, -2), (-4, 2), (-2, 8), (2, -8)}
Answer: D
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A. 162
B. 
C. 
D. 
Find the weighted mean of the numbers in the table. Round to the nearest tenth.Find the mean salary for the employees. Round to the nearest thousand dollars. 
A. $41,000 B. $40,000 C. $45,000 D. $39,000
Solve the inequality and graph. Express your answer in interval notation.-3(3x - 2) < -12x - 21
A. (-9, ?)
B. [-9, ?)
C. (-?, -9]
D. (-?, -9)
Find the indicated unit price.A grocery store sells a 20-ounce bottle of pop for $1.80, and a 40-ounce bottle for $2.80. Find the unit prices and compare them to determine which is the better deal. Round to two decimal places.
A. 20-ounce bottle: $0.91 per ounce; 40-ounce bottle: $1.07 per ounce. The 20-ounce is the better deal. B. 20-ounce bottle: $0.07 per ounce; 40-ounce bottle: $0.09 per ounce. The 20-ounce is the better deal. C. 20-ounce bottle: $0.09 per ounce; 40-ounce bottle: $0.07 per ounce. The 40-ounce is the better deal. D. 20-ounce bottle: $0.20 per ounce; 40-ounce bottle: $0.07 per ounce. The 40-ounce is the better deal.