## Introductory Algebra for College Students (7th Edition)

$9-5=4$ Therefore, $A=4$ and $B=5$. $A=PB$ $4=P(5)$ $\frac{4}{5}=P$ $0.8=P$ $P=0.8$ Change the decimal to a percent by moving the decimal point two spaces to the right. 0.8=80%