Help with the problem below

P (n), given below, is the price P in dollars for / grams of vitamins. P (n) = 0.8n + 5.2 Complete the following statements. Let P" be the inverse function of P. Take X to be an output of the function P. (a) Which statement best describes P(x)? O The reciprocal of the price (in dollars) for x grams of vitamins. O The amount of vitamins (in grams) for a price of X dollars. O The price (in dollars) for x grams of vitamins. O The ratio of the price (in dollars) to the number of grams, X. (b) P (x) = 0 (c) P (10.4) = 0