Question

Find the maximum revenue for the revenue function r(x) = 382 x − 0.6x 2. (round your answer to the nearest cent.)

Answer 1

The coefficient of x² is is a negative 0.6, so this function has a maximum value.
the max value of a quadratic function is the value of f(x) when x=-b/2a, 
in this case, a=-0.6, b=382
so x=382/1.2=
r(382/1.2)=-0.6(382/1.2)²+382*(382/1.2)
use a calculator: 60801.67 is the number I got.