A high school band is raising money to purchase equipment fo

A high school band is raising money to purchase equipment for their drumline. The amount of money in their account, A(x), after x months of fundraising can be represented by the function A(x) = 100 + 325x.   If they have $2700 in their account, how many months had they been raising money for their drumline?

Solution

A(x)=100+325x

$2700=A(x)

So, replacing

2700=100+325x

2700-100=325x

2600=325x

2600/325=x

8=x

they had been raising money for 8 months