The points it gives you are y intercepts, and because you’re trying to find lines parallel- the only thing that changes for the equation is the y intercept.
1) y=2x+4
2) y=-x+7
3)y=-8x-2
0 = (x – 3)(x – 3)
x - 3 = 0
x = 3
Solution is x = 3 (one real solution)
Answer
0 = (x – 3)(x – 3)
When you want to find zeros of rational expression you need to find at which points numerator is equal to zero. In this case, we have the product of three expressions.

A product is equal to zero whenever one of the factors is equal to zero.
That means that zeros of our functions are:
1)

2)


3)


The final answer is a. Function has zeros at (0, 1, -11).
Phone card = $20
You need to minus 17.92 from 20 = $2.08
$2.08 / 0.13 = how many minutes
= 16