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#39375

word problem

modeling

graphs

exponential

functions

algebra

medium

60 sec

Calculator OK

A plumber charges a flat fee plus an hourly rate for services. The total cost, $C (h)$ , in dollars, for a service that takes $h$ hours is modeled by the function $C (h) = 75 + 60 h$ . Which of the following is the best interpretation of the $C$ -intercept of the graph of $C (h)$ in the $h C$ -plane?

A.

The plumber charges $60 p er h o u r .$

B.

The total cost for 60 hours of service is $75.$

C.

The plumber charges $75 p er h o u r .$

D.

The plumber's flat fee for a service is $75.$