Please help me fast i will give first answer brainliest!!

see below

Step-by-step explanation:

f(x) = 2x^2 +4x-16

Factor out 2

f(x) = 2 (x^2 +2x) -16

Complete the square inside the parentheses

Take the coefficient of x, divide by 2 and square it

(2/2)^1

f(x) = 2 ( x^2+2x+1   -1 ) -16

Bring the -1 outside the parentheses

f(x) = 2(x^2+2x+1)-2 -16

f(x) = 2(x+1)^2 - 18

This is in vertex form

y = a(x-h)^2 + k  where ( x,k) is the vertex

f(x) = 2(x - -1)^2 - 18

The vertex is (-1,-18)

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.