7. Determine the cumulative benefit over its period of use from installing new equipment given the following information. 0 New equipment' 5 annual rate of increasing productivity = 225 - x2 0 New equipment' 5 annual rate of increasing maintenance cost = x2 + 25x + 150 0 New equipment is retained and used only during period when the increasing productivity rate 2 the increasing maintenance cost rate 0 Time x 2 0 in years 8. Given the following information, answer the ensuing. 0 Cost C(q) = -1()q2 + 200q 0 Price P(q) = - q2 - 3q + 249 0 Quantity q and revenue R = (P(q])[q) 2 0 8.1 Price and quantity that maximize prot 8.2 Maximum prot 8.3 Production interval [x values] that is protable 8.4 Maximum average prot