PART A Let the cost function to produce x units of a product…

PART A Let the cost function to produce x units of a product be C(x)=5x+21{“version”:”1.1″,”math”:”C(x)=5x+21″} and the revenue IN THOUSANDS of dollars be R(x)=-x2+17x{“version”:”1.1″,”math”:”R(x)=-x2+17x”}. In the first blank below, list the vertex for the revenue function. Leave your answer in coordinate form (x,y){“version”:”1.1″,”math”:”(x,y)”}. NOTE: Round each value to one decimal place. _______ PART B In the second blank below, determine the MAX Revenue. (Watch your units!) _______ PART C  In the third blank below, find the MINIMUM break even point. Leave your answer in coordinate form (x,y){“version”:”1.1″,”math”:”(x,y)”}. NOTE: Round each part of the answer to ONE decimal place. HINT: Set your calculator window to xmin: 0xmax: 25xscl:1 ymin:0ymax:90yscl:10 _______  PART D In the final blank below, determine the number of UNITS (x) needed to be sold in order to maximize the PROFIT. _______