The price of a bond, A(x), over a 12-month period decreased according to the
equation A(x) = -0.75x² - 6x + 20, where x equals the number of months from the
beginning of the period. The price of another bond, B(x), increased according to the
equation B(x) = 3x + 1.50 over the same 12-month period. Determine approximately how
many months it took for both bond prices to be the same?