Odule review (rm c2 m3) question 13 this question has two parts. first, answer part a. then, answer part b. part a adrian pays his niece $30 to babysit for 5 hours. which expression models the change in the amount of adrian's cash each hour that his niece babysits? cross out a) −30÷5 cross out b) –30⋅5 cross out c) –5÷30 cross out d) 30−5