Answer:
Total cost= 369 + 4.5x
x= number of minutes
Step-by-step explanation:
Giving the following information:
Fixed cost= $369
Unitary variable cost per minute= $4.5
To calculate the total cost after x minutes, we need to use the following formula:
Total cost= 369 + 4.5x
x= number of minutes
For example, for 45 minutes:
Total cost= 369 + 4.5*45
Total cost= $571.5
