How much will you save if you buy an item listed at $575.50 at a 30 percent discount?

Y=4x^2+x-1 solve using quadratic formula

Solve 13 + w/7= -18 (w/7 is a fraction)

What is the solution for the following system of equations? use any method to solve. y = -x +4 y = x - 2 a. ( 4 , -2) b. (2, 1) c. (3, 1) d.(3, -2)