Problem Page Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $16
monthly fee and charges an additional $0.07 for each minute of calls. The second plan has a $12 monthly fee and charges an additional $0.11 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
1 answer:
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We have that
y=x²<span>+5x+3
y=</span>√(<span>2x+5)
using a graph tool
see the attached figure
the solution is
x=-0.175
y=2.156
therefore
the answer is the option
</span>B.) (-0.2, 2.1)
y=x²<span>+5x+3
y=</span>√(<span>2x+5)
using a graph tool
see the attached figure
the solution is
x=-0.175
y=2.156
therefore
the answer is the option
</span>B.) (-0.2, 2.1)
