To form the contrapositive of the conditional statement, interchange the hypothesis and the conclusion of the inverse statement. The contrapositive of "If it rains, then they cancel school" is "If they do not cancel school, then it does not rain."
You have no choices listed but here's the answer: (85 + 91 + x) / 3 = 94 Multiplying both sides by 3 85 + 91 + x = 282 x = 106 In order for her to get a 94 average she would need a mark of 106 on her next test.