Find the value of x so that f(x)=3

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Which graph represents the parent function of y=(x+2)(x-2)

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60