The marching band of a school is holding a fundraiser. they are charging seven dollars to wash a car and they spent 45 dollars to rent space at a local business that will provide the water they need. the club also spent 60 dollars on soap and other supplies. choose the function that best models their fundraiser based on the information given.

a) f(x)=45x+60

b) f(x)=60x+45

c) f(x)=7x+105

d) f(x)=7x−105