Answer:

Step-by-step explanation:
The standard form of an equation of a line:

We have the equation in the point-slope form. Convert:

Each of 4 friends has 2 balloons
4 x 2 = 8
herself has one
so 8 + 1 = 9
answer: Total 9 balloons
Add 13 to both sides
13 = 2x + 15x
Simplify right side
13 = 17x
Divide through by 17
13/17 = x
The answer for this problem is B
A. is your answer
you could always double check with a calculator