Question

the total sales of a company after t weeks is given by the integral: S(t)= 60x^2/sqrt(x+9)dx (it is assumed that the sales are initially zero.)
a) find the formula for the sales after t weeks, S(t)
b) use your formula to find the total sales afetr 1 year (52 weeks).

Answer 1

\[\int\limits_{0}^{t}60x^2/\sqrt{x+9}dx\]

Answer 2

u=x+9

Answer 3

thanks for the hint