Question: for a fixed fee of 30 she is allowed 100...
For a fixed fee of $30, she is allowed 100 minutes of free calls. For any calls above 100 minutes, she pays an additional fixed fee of $20 as well as a per-minute charge for each additional minute above 100 minutes. the per-minute charge is 20 cents between 100 and 600 minutes, and 60 cents after 600 minutes.
1. Let B be the monthly bill in dollars and T be the total time of calls in minutes. Write an equation that describes Kayla's monthly bill from T = 0 to T = 1000 minutes
2. Construct a graph that describes Kayla's monthly bill as a function of total time.