I really need someone to answer this please, I really need to pass this test:(.

Using elimination, what is -4x+2y=-12 4x+8y=-24

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?