Question 1196026

Josel buys cell-phone services from a company that charges a minimum of $20 per
month. For that $20, he is allowed 100 minutes of free calls. For any calls above
100 minutes, he pays 50 cents per additional minute. Sketch a graph that describes
<pre>C(m) = .5(m - 100) + 20, with m ≥ 100
C(m) = .5m - 50 + 20, with m ≥ 100
Correct equation: {{{matrix(1,3, C(m), "=", .5m - 30)}}}, with m ≥ 100
Changing the equation's variables for graphing. we get:
                    {{{matrix(1,3, y, "=", .5x - 30)}}}, with, m ≥ 100 ------ Replacing cost, based on minutes, or C(m), with y, and m (minutes) with x.
                    Now, YOU do the graphing.