A plumber charges a customer a one-time
service fee of $79, $62 per hour for labor, and a surcharge of
$15 per hour due to the call being an emergency. Write an
expression to represent the total charges for the plumber in
two different ways.

The total charges for the plumber can be broken down as follows:

- A **one-time service fee** of $79.
- An hourly **labor cost** of $62.
- An hourly **emergency surcharge** of $15.

Let $ h $ represent the number of hours worked. The total charge, $ C $, can be written in two different ways:

### First Expression:
\[
C = 79 + (62 + 15)h
\]
In this form, you add the labor cost and emergency surcharge together, then multiply by the number of hours, and finally add the one-time service fee.

### Second Expression:
\[
C = 79 + 62h + 15h
\]
In this form, you keep the labor cost and emergency surcharge as separate terms and multiply each by the number of hours, then add the one-time service fee.

Would you like more details or have any questions?

Here are 5 related questions:
1. How does the total cost change if the emergency surcharge is removed?
2. What happens to the total cost if the plumber works for half an hour?
3. If the plumber works for 5 hours, what would the total charge be?
4. How would the expression change if the one-time service fee increases by 10%?
5. If the emergency call lasts 3 hours, how much does the emergency surcharge contribute?

**Tip:** When creating cost expressions, always identify the fixed and variable components to simplify understanding.

A plumber charges a customer a one-time service fee of $79, $62 per hour for labor, and a surcharge of $15 per hour due to the call being an emergency. Write an expression to represent the total charges for the plumber in two different ways.

Learn how to calculate the total plumber charges with a one-time service fee of $79, $62 per hour for labor, and an additional $15 per hour surcharge for emergency calls. This problem involves linear equations and variable expressions, suitable for students in Grades 6-8.

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