Pls answer here is some points and this is not math sorry

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called