If your percent of discount is 25% and your sales price is $40, what is your original price. show me how you got your answer.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.