The right answer is -2.
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Answer: The plan A would be better deal for more than 300 calling minutes.
Step-by-step explanation:
Since we have given that
Plan A has a monthly fee of $15 with a charge of $0.08 per minute for all calls
Let the number of minutes be 'x'.
So, Equation would be
Plan B has a monthly fee of $3 with a charge of $0.12 per minute for all calls.
So, Equation would be
We need to find the number of calling minutes in a month to make plan A the better deal.
Hence, the plan A would be better deal for more than 300 calling minutes.
1,4,6,8,16,25
6,12,18,51,69
I think these might be the answer. I'm not fully sure.