Abag contains 5 yellow marbles, 7 pink marbles, and 3 purple marbles. gordon selects a marble without looking. what is the probability that he selects a yellow marble or a purple marble?

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _