An electrical company uses the function f(h) = 15h + 75 to calculate the total repair bill, f(h), for h number of hours worked. find h if f(h) = $225.

 The required value of h is 10.

Step-by-step explanation:  Given that an electrical company uses the following function to calculate the total repair bill f(h) for h number of hours worked :

We are to find the value of h if f(h) = $225.

To find the required value of h, we need to substitute the value of f(h) in equation (i) as follows :

Thus, the required value of h is 10.

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step-by-step explanation: