Question

2.2.15Micah found the vertex for the function y= -9.5x2 - 47.5x +63 as shown. Findand correct Micah's errorExplain the errorbx= - 2aXOAbMicah used the wrong sign for b in the formula x =2aOB. Micah should have evaluated the function with x = 0 to find they-coordinateO C. Micah did not use the correct order-of-operations dividing 47.5 by21 -9.5)O D. Micah should have found a positive value when he simplified the- 9.5(2.5) term47.521-9.5)47.5- 19x= -(-2.5)x= 2.5y = -9.5(2.5)2 - 47.5(2.5) +63y = -59.375 - 118.75 +63y = - 115.125X-

Answer 1

The error is found that the value of B is -47.5 and not 47.5, therefore, the answer is the option A