The value of a painting is worth $170 when purchased. (a) Suppose the value of the painting increases by $60 each year. Write a formula for the value of the painting, V, as a function of the number of years since the painting was purchased. V (t ) Find V '(3) = --Select- V (b) Suppose the value of the painting increases by 4 % each year instead. Write a formula for the value of the painting, V, as a function of the number of years since the painting was purchased. V (t ) = Find V '(3) . Give your answer to two decimal places. V '(3) = --Select