2 x + 3 y = 7 3 x + 4 y = 10 solve by elemination

Write the rational number in lowest terms 99/-15

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.