An individual’s labor earnings (W) is given by W=−2E 2 +78E-2X 2 +66X−2EX where E represents the individual’s education level, and X represents the years of experience in a given profession. a.Find...

An individual’s labor earnings (W) is given by

W=−2E²+78E-2X²+66X−2EX

where E represents the individual’s education level, and X represents the years of experience in a given profession.

a.Find the combination of education and experience that gives the highest level of earnings.

b.Test to be sure earnings are maximized.

c.Find the corresponding earnings.