The total amount you have to pay for the reapiring of a refrigerator is given by the following equation:
[tex]t=105+439+75h[/tex]
Where h is the number of hours the technician spent working on the refrigerator. Given a certain number of hours the total pay can be calculated by replacing h with that number of hours. This means that in order to solve our problem we simply need to replace the h with 5 and make the calculations:
[tex]t=105+439+75\cdot5=919[/tex]
Then the answer is $919
