Do you have a (a,b,c,d) type of answer?
if yes it would be c, if no... Then uh good luck
-1/2 is the slope of the line!
We know that
• Lashonda purchased a prepaid phone card for $20.
,
• Long-distance calls cost 8 cents a minute.
,
• The remaining credit on her card is $17.12.
This problem can be expressed as

Where <em>x</em> is the number of minutes.
We solve the equation for <em>x</em>

Then, we divide by -0.08 the equation

<h2>Therefore, Lashonda's call last 36 minutes.</h2>
The vertical line test is when you put vertical lines down the graph and if the point does not touch the line more than once, it passes and represents a function.