How do equations us in the real-world?

Equations are used all the time in the real world whether you realize it or not. Equations in real life can be used to calculate budgeting, rates, costs, and can help you make predictions. This is very important if you a working or studying in a business environment, or you can use it if you're just going to the store to find the best deal.

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)