## College Algebra 7th Edition

$0.15x-0.000002x^2$
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: $R(x)=x\cdot(0.15-0.000002x)=0.15x-0.000002x^2$