The correct answer is: "Jada should have multiplied both sides of the equation by 108"
The goal of this equation is to isolate x, which is something that Jada failed to do. And the only way to isolate x is to multiply each side by 108, since it is the reciprocal of

The rate would be the gradient which is dy/dx
so the answers are
4x and 5x
It’s 1.875
Hope this helps!
18 quarters
just do trial and error. It's easy!