Answer:
The total that the student must pay for 14 credits is $ 21.50 dollars
Explanation:
The cost of credit is given by the following encuacion

Where C corresponds to the number of credits to be taken and T corresponds to the money that must be paid for the total credits
If we want to know the total money (T) you must pay for 14 credits (C)
We must substitute the amount of credits (C = 14) in the equation

The total that the student must pay for 14 credits is $ 21.50 dollars