Adiagonal path divides a square park in half. if the park is 50 yards on each side, how long is the path?

Solve the system of equations. y= 2x y= x^2 - 15

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Just tell me how to set up the equation.