Given f(x)=x^2+4x+7 .

what equation shows function f written in vertex form?

a) f(x)=(x+2)^2+3

b)f(x)=(x+4)^2+11

c) f(x)=(x+3)^2+7

d) f(x)=(x+4)^2−7

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

its line 2 i just added the rest or else it wouldn't let me answer