Marginal Profit for Producing Loudspeakers Acrosonic's production department estimates that the total cost in dollars) incurred in manufacturing x Electrostat speaker systems in the first year of production will be represented by the following function, where R(x) is the revenue function in dollars and x denotes the quantity demanded. Find the following functions (in dollars) and compute the values in dollars). and R(x) = -0.04x+800x C(x) = 100x + 31,000 (a) Find the profit function P.
(b) Find the marginal profit function P.
(c) Compute the following values. P"(3,500) - P"[9,000) =

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.