All we need is to put this form in the vertex form f(x) = (ax+b)^2 + c

So we have f (x)= 3x^2+12x+11 ....

Let's complete the square (if you aware of it)

f(x)= 3x^2+12x+11 = 3(x^2+4x)+11 = 3(x^2+4x+4-4)+11
= 3([x^2+4x+4]-4)+11 = 3[(x+2)^2-4]+11 =3(x+2)^2 - 12 +11 = 3(x+2)^2 -1

so our form would be:

$f(x)=3(x+2)^2-1$

Here is a parabola with vertex of (-2,-1) and with positive slope (concave up)

I hope that helps!

6 0

3 years ago

The school you want to go to has an acceptance rate of 15%15%. That means that 15%15% of the students who apply to the school ge

Mice21 [21]

Let, the number of students who applied for school = x
Then, it would be: x * 15% = 1800
x * 0.15 = 1800
x = 1800 / 0.15
x = 12,000

In short, Your Answer would be 12,000 students applied for that

Hope this helps!

3 0

3 years ago

Mary has $40\%$ fewer marbles than Jolie. If they combine all their marbles in a single bag, what percent of the marbles in the

Gwar [14]

Google the question to find the answer

6 0

3 years ago