1) Answer: B. Y=(8)(10)(25)/5 = 400
2) Answer: B. inverse ratio is 44/55 = .8, .8 *$30 = $24
3) Answer: B. discontinuity happens in a divide by zero situation. Divide by zero happens when denominator is 0. Denominator factored is (X+5)(X-1). when X = -5 and 1, denomitor is zero.