## College Algebra 7th Edition

(a) Hooke's Law states that: $F=kx$ where $F$ is force and $x$ is distance stretched. (b) We are given $F=30$ and $x=9-5=4$ and can use this to find $k$: $30=k*4$ $k=30/4=7.5$ (c) We are given $x=11-5=6$ and need to find $F$: $F=7.5*6=45\ N$