Phone card = $20
You need to minus 17.92 from 20 = $2.08
$2.08 / 0.13 = how many minutes
= 16
Answer:
The line does not intersect the curve
Step-by-step explanation:
Assuming that we are looking for the points of intersection of

and

We make y the subject in the second equation to get:

When we substitute into the first equation:

Let us expand to get:

We obtain the standard form

Divide through by 5

The discriminant is

Hence the quadratic equation has no real roots.
This means the line and point has no point of intersection.