The table shows the annual increase in cost in t years for certain grocery items. Based on the formula A = C(1 + r)t, which equation could you use to determine the cost in t years for a gallon of milk?
Given A=C(1+r)t to get the formula for cost we make C the subject as follows divide both sides by (1+r)t, this will give us: A/(1+r)t=C hence the cost function will be: C=A(1+r)^(-t)
