The function g(x) = 3x2 − 12x 7 written in vertex form is g(x) = 3(x − 2)2 − 5. what is the vertex of g(x)? a.(−6, −5) b.(−2, −5) c.(2, −5) d.(6, −5)

we know that

The equation of the vertical parabola is of the form

where

is the vertex of the parabola

In this problem we have

The parabola open upward

The vertex is a minimum

The vertex is the point

therefore

the answer is the option C

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.