need help to solve, please see attached

Air Purication During testing of a certain brand of air purifier, the amount of smoke remaining (as a percent of the original amount} t min after the start of the test was given by the following function. A{t) = 70.00006f5 + 0.004631-4 7 0.1497:3 + LSSSI'Z 7 17.53: + 98 Compute the following values. mm = x mm = x Marginal Revenue for Producing Loudspeakers The management of Acrosonic plans to market the ElectroStat, an electrostatic speaker system. The marketing department has determined that the demand for these speakers is represented by the Following function, where p denotes the speaker's unit price (in dollars) and x denotes the quantity demanded. Find the following functions [in dollars), find the value (in dollars) and interpret your results. p = 0.01x + 760 (o g x 3 20,000) (a) Find the revenue function R. RV) = 4101:? + 760x ~l (b) Find the marginal revenue function R'(X}. RD!) = 70.01 X (c) Compute the following value. mono} = x Interpret your results. when the level of production is 6501 x units, the production of the next speaker system will bring an additional revenue of X dollars