Micah found the vertex for the function y 9 5x 47 5x 63 as shown Find and correct Micah s error X X X b 2a 47 5 2 9 5 47 5 19 x 2 5 x 2 5 y 9 5 2 5 47 5 2 5 63 y 59 375 118 75 63 y 115 125 Explain the error O A Micah should have found a positive value when he simplified the 9 5 2 5 term B Micah used the wrong sign for b in the formula x b 2a C Micah should have evaluated the function with x 0 to find the y coordinate OD Micah did not use the correct order of operations dividing 47 5 by 2 9 5 The correct vertex is Type an ordered pair