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

$$c = 4F - 160$$
To solve this equation for $c$, we need to isolate $c$. First, we want to subtract both sides by $80$: $$\frac{c}{2} = 2F - 80$$ We now isolate $c$ by multiplying by $2$ on both sides: $$c = 2(2F - 80)$$ We simplify to get: $$c = 4F - 160$$