Customers of a phone company can choose between two servers plans for a long-distance calls. The first plant has $27 monthly fee
and charges an additional $0.07 for each minute of calls. The second plan has no monthly fee but charges $0.11 for each minute of calls. For how many minutes of calls with the cost of the two plans be equal?
1 answer:
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The equation of f(x) is f(x) = x + 4
<h3>How to determine the equation?</h3>The given parameters are
f(-1) = 3 and f(1) = 5
Start by calculating the slope (m) using:
This gives
Evaluate
m = 1
The equation is then calculated as;
f(x) = m(x - x1) + f(-1)
This gives
f(x) = 1(x + 1) + 3
Expand
f(x) = x + 4
Hence, the equation of f(x) is f(x) = x + 4
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