4. The value, V dollars, of an antique artifact + years after it is purchased is modeled by the function V(t) = (3580 + 0.31)(2 + 1) the Qu Vo.71 +3 a) What was the purchase price of the artifact? [1] vitoups b) Determine the rate of change of the value of the artifact after + years. Do not simplify. [2] [1] c) Is the value of the artifact increasing or decreasing? Justify your answer. d) Compare V'(4) and V'(24). When should you sell the artifact? Explain. [4]