Which equation has the smallest rate of change

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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