Dear tutor,

Please help me to understand the answer to the below problems.

40) Solve the Problem graphically to two decimal places using a graphing calculator.

40. 3.4 + 2.9x - 1.1.x- 2In Problems 55 and 56, assume that a, b, c, h, and k are constants with a +0 such that ax' + bx + c = a(x - h)= + k for all real numbers x. b 55. Show that h = 2a