The cost, in dollars, of a one-day car rental is given by C(x) = 31 + 0.18x, where x is the number of miles driven. In this function,
A) $0.18 is the cost per day to rent the car and $31 is the cost per mile.
B) $31 is the cost per day to rent the car and $0.18 is the cost per mile.
C) $18 is the cost per day to rent the car and $0.31 is the cost per mile.
Eliminate
D) $31 is the cost per day to rent the car and $18 is the extra cost for unlimited miles.

Question

The cost, in dollars, of a one-day car rental is given by C(x) = 31 + 0.18x, where x is the number of miles driven. In this function,
A)	$0.18 is the cost per day to rent the car and $31 is the cost per mile.	
B)	$31 is the cost per day to rent the car and $0.18 is the cost per mile.	
C)	$18 is the cost per day to rent the car and $0.31 is the cost per mile.	
Eliminate
D)	$31 is the cost per day to rent the car and $18 is the extra cost for unlimited miles.

rhondasommer · Answer

*Hint*usually when it is cost per you have x next to that...

rhondasommer · Answer

if x is miles driven then you will multiply cost per mile times miles driven. 31 is per day

texmechanica · Answer

It's b.