Answer: The vertex form is h(x)=(x-3)^2-6
Step-by-step explanation:
Using the complete the square method, first complete any squares
X^2-6x+(-3)^2-(-3)^2+3
Use the binomial formula
(x-3)^2 - (-3)^2 +3
Simplify
(x-3)^2-6
let x = the number
7x - 6 =85
add 6 to each side
7x =91
divide each side by 7
x = 91 /7 = 13
Answer is B 13
