9514 1404 393
Answer:

Step-by-step explanation:
First of all, subtract 12 from both sides of the equation to put it into standard form:
3x² +8x -12 = 0
Then identify the a, b, c of this form:
ax² +bx +c = 0
You see that a=3, b=8, c=-12.
Now use those values in the quadratic formula for the solutions:

The answer to this one would be B
50% - 1/2
10% - 1/10
6% - 3/50
65% - 13/20
I believe what you are wanting is f(x)= x+5.