A) Write the vertex form by substituting in values for x, y, h, and k, and then solve for a. Show your work. (10 points)

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 = _