Answer
$$c = 4F - 160$$
Work Step by Step
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:
$$c = 4F - 160$$
