Suppose that a company's daily sales volume attributed to an advertising campaign is given by the following equation. S(t)=4/t+9

Question

Suppose that a company's daily sales volume attributed to an advertising campaign is given by the following equation.
S(t)=4/t+9 - 28/(t + 9)²
(a) Find how long it will be before sales volume is maximized.
t=
(b) Find how long it will be before the rate of change of sales volume is minimized. That is, find the point of diminishing.
returns.
t=

Kunduz · Accepted Answer

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