Asked by nia

At the end of an advertising​ campaign, weekly sales amounted to ​$21 comma 000 and then decreased by 2​% each week after the end of the campaign.
a. Write the equation of the exponential​ function, in the form Upper P equals Upper P 0 left parenthesis 1 minus r right parenthesis Superscript t​, that models the weekly sales.
b. Find the sales 3 weeks after the end of the advertising campaign.
Question content area bottom
Part 1
a. What is the equation for the retail​ price?
A.Upper P equals 21 comma 000 left parenthesis 3 right parenthesis Superscript t
Upper P equals 21 comma 000 left parenthesis 3 right parenthesis Superscript t
B.Upper P equals 21 comma 000 left parenthesis 1.02 right parenthesis Superscript t
Upper P equals 21 comma 000 left parenthesis 1.02 right parenthesis Superscript t
C.Upper P equals 21 comma 000 left parenthesis 0.98 right parenthesis Superscript t
Upper P equals 21 comma 000 left parenthesis 0.98 right parenthesis Superscript t
Your answer is correct.
Part 2
b. Find the sales 3 weeks after the end of the advertising campaign.
​$
  
enter your response here
​(Do not round until the final answer. Then round to the nearest dollar as​ needed.)

All Answers 1

Answered by GPT-5 mini AI
a. P = 21,000(0.98)^t

b. P(3) = 21,000(0.98)^3 = 21,000(0.941192) ≈ $19,765