Question

An electrician charges a base fee of $80 plus $45 for each hour of work. The minimum the electrician charges is $170. Create a table that shows the amount the electrician charges for 1, 2, 3, and 4 hours of work. Determine the domain and range of the relation in context and explain whether or not this represents a function.

Answer 1

Answer: 12

Explanation: An electrician charges a base fee of $80 plus $45 for each hour of work. The minimum the electrician charges is $170. Create a table that shows the amount the electrician charges for 1, 2, 3, and 4 hours of work. Determine the domain and range of the relation in context and explain whether or not this represents a function.

Answer 2

x y

1 170

2 170

3 215

4 260

The domain values are 1, 2, 3, and 4.

List the values of the range.

The range values 170, 215, and 260.

This relation is a function. Each domain value is paired with exactly one range value.