Question 698390
Let Y = cost of plan per month
Let X = number of minutes on phone
Plan A: {{{Y = 45}}}
Plan B: {{{Y = 0.1X + 15}}}
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The inequality for when Plan A is less than Plan B would be:
{{{45 < 0.1X + 15}}}
Now we will solve for X
Subtract 15 from both sides
{{{30 < 0.1X}}}
Divide both sides by 0.1
{{{300 < X}}}
Plan A is the better option when you are on the phone for 301 minutes or more per month