Which function has a vertex at the origin?
of(x) = (x +.4)2
of(x) = x(x-4)
f(x) = (x – 4)(x + 4)
o f(x) = x²

answer:   14

step-by-step explanation:          

pu you stank bo u ugly bo lol

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

the answer to your question is b.