The equation below shows the area of a trapezoid, a, with a height of 9 cm, and one base 35 cm a = 9 over 2(b + 35). which of the following formulas correctly solves for the other base, b? a. b = 2a over 9 + 35. b. b = 2 multiplied by a over 9 - 35. c. b = 2 multiplied by a plus 35, all over 9 d. b = 2 multiplied by a minus 35, all over 9