Question

The sales S (in thousands of units) of a cleaning solution after x hundred dollars is spent on advertising are given by the following.

S = 10(1-ekx)
When $675 is spent on advertising 2900 units are sold.
(a) Complete the model by solving for k. (Round your answer to 4 decimal places.)
k =
(b) Estimate the number of units that will be sold if advertising expenditures are raised to $925.
units

Answer 1

as a result you get approximately 2.8949 which in thousands of units is 2894 (rounded down since you can't have a fraction of a unit).