A cell phone company charges a monthly fee of $17.95 and $0.03 per minute
Write an equation that represents the cost (c) for using the cell phone for minutes (m)
Use your equation from part a to find the cost for using the phone for 150 minutes
c = 17.95 + 0.03m
To write an equation that represents the cost (c) for using the cell phone for minutes (m), we can build it based on the given information: a monthly fee of $17.95 and $0.03 charged per minute.
The monthly fee is a fixed cost that is applied regardless of how many minutes are used. The cost per minute is variable and depends on the number of minutes used.
To include both components in the equation, we can use the formula:
c = 17.95 + 0.03m
The first term, 17.95, represents the fixed monthly fee, and the second term, 0.03m, accounts for the cost-per-minute charge based on the variable number of minutes used (m).
To find the cost for using the phone for 150 minutes, substitute m = 150 into the equation:
c = 17.95 + 0.03(150)
c = 17.95 + 4.50
c = 22.45
Therefore, the cost for using the phone for 150 minutes is $22.45.