The Cost of a Rental Car for the Weekend Is $$C ( x ) = 146 + 0.25 x$$

The cost of a rental car for the weekend is given by the function C(x) $$C ( x ) = 146 + 0.25 x$$ , where x is the number of miles driven. Find the slope of the graph of this function and interpret it as a rate of change.

A) 0.25; The cost of the rental car decreases by $0.25 for each mile driven.
B) 146; The cost of the rental car increases by $146 for each mile driven.
C) 146; The cost of the rental car decreases by $0.25 for each mile driven.
D) 0.25; The cost of the rental car increases by $0.25 for each mile driven.