Bus Econ 13.2.45 Question Help The marginal revenue (in thousands of dollars) from the sale of x gadgets is given by the following function. The revenue from 125 gadgets is $22,819. w/ N MR(x) = 4x (x2 + 29,000) (a) Find the revenue function. (b) What is the revenue from selling 250 gadgets? (c) How many gadgets must be sold for a revenue of at least $35,000? (a) R(x) = (Simplify your answer. Round to the nearest integer as needed.)