Question

The sales of a product decline after the end of an advertising campaign, with the sales decay given by

S = 200,000e−0.6x,

where S represents the weekly sales and x represents the number of weeks since the end of the campaign.

(a)

What will be the sales for the tenth week after the end of the campaign? (Round your answer to two decimal places.)

$

(b)

During what week after the end of the campaign will sales drop below 400?

week

Answer 1

(a)

For this case, the value of x will be equal to 10

(b)

We need to compute the value of x for which sales drop below $400

Hence it will fall below 400$ after 10 week, so the nearest answer will be 11 week

Note - Post any doubts/queries in comments section.