Suppose you have a gift certificate worth $20 for one long-distance phone call. If the charge is $1.10 for the first minute and $0.42 for each additional minute, what is the longest that you can talk?

I found an answer from securities.stanford.edu
UrY c` RK
Dec 18, 2009 ... It was hard to believe a doctor could charge. $20,000 for a five to ten minute outpatient procedure. 55. This practice of using higher ...
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Assume x to be the number of minutes you can talk, then,
the equation to represent this will be,
1.10 + 0.42 x = 20
0.42 x = 20 - 1.10 = 18.9
x = 45
So, the longest you can talk is 45 minutes.
I found an answer from jbarrueta.weebly.com
Algebra 2 YL 3.6 Day 2 Worksheet – Real Life Linear Inequalities ...
Define a variable and write an inequality to model each situation. ... Suppose you have a gift certificate worth $20 for one long-distance phone call.
For more information, see Algebra 2 YL 3.6 Day 2 Worksheet – Real Life Linear Inequalities ...