Maximize q=xy^2, where x and y are positive numbers, such that x+y^2=4

Multiply (1) by , then subtract (2) from that result:






which means , , or . But , so we only take .

Substitute into (3) and solve for .



So a attains a maximum at , giving a maximum value of .

Ithink you're supposed to multiply 12.50 which is how much he makes per hour and then multiply it by each number then add whats left togrther and there's your answer

11/2.2 = 5 inches for the length 8.5/2.2= 3.86 inches for the width