Solve the problem.To remodel a bathroom, a contractor charges $25 per hour plus material costs, which amount to $3650. Therefore, the total cost to remodel the bathroom is given by 
where x is the number of hours the contractor works. Find a formula for 
What does 
compute?
A. f -1(x) = 
- 146; This computes the total cost if the contractor works x hours.
B. f -1(x) = 
- 3650; This computes the total cost if the contractor works x hours.
C. f -1(x) = 
- 3650; This computes the number of hours worked if the total cost is x dollars.
D. f -1(x) = 
- 146; This computes the number of hours worked if the total cost is x dollars.
Answer: D
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A. {(-0.12, 0.70)} B. {(0.70, 0.12)} C. {(-0.70, 0.12)} D. {(0.12, -0.70)}
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
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A. 18 B. 28 C. 33 D. 25
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A. Independent B. Dependent C. Inconsistent