Question

A plumber charges $110 per hour. If h represents the number of hours that he works, what domain values are relevant on a graph that shows his earnings?

Answer 1

h ≥ 0

Explanation:

The equation of his earnings is $110h. He can't work negative hours.

Answer 2

Given that a plumber charges $110 per hour. Where h represents the number of hours worked by plumber.

Then profit equatio for the plumber is given by P=110h

where P gives total earning of the plumber in h hours.

Now we need to find about what domain values are relevant on a graph that shows his earnings. Graph is not given but that is not the problem.

We know that number of hours can never be negative. It can be 0 or more.

Hence domain for the graph will be "all positive real numbers" which can also be written as:

h≥0.

Maximum hours is not given neither it is specified to use data for how many days so we will not put any upper bound for h.