Answer
$0.15x-0.000002x^2$
Work Step by Step
The price per sticker is given as:
$0.15-0.000002x$
and the number of stickers sold is $x$. Multiplying these together gives the revenue:
$R(x)=x\cdot(0.15-0.000002x)=0.15x-0.000002x^2$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.