The rate of change of revenue (in dollars per calculator) from the sale of x calculators is R' (x )equals (x plus 2 )ln (x plus 2 ).R'(x)=(x+2)ln(x+2). Find the total revenue from the sale of the first 1515 calculators. (Hint: In this exercise, it simplifies matters to write an antiderivative of x plus 2x+2 as StartFraction (x plus 2 )squared Over 2 EndFraction(x+2)22 rather than StartFraction x squared Over 2 EndFraction plus 2 x. )x22+2x.)