Solve the problem. Two plumbers make house calls. One charges $105 for a visit plus $30 per hour of work. The other charges
$80 per visit plus $40 per hour of work. For how many hours of work do the two plumbers charge the same?

The two plumbers charge the same for 2.5 hours of work.

Step-by-step explanation:

The first plumber's charge is given by F(x).

The second plumber's charge is given by S(x).

One charges $105 for a visit plus $30 per hour of work.

This means that, for x hours of work, the charge is given by:

The other charges $80 per visit plus $40 per hour of work.

This means that, for x hours of work, the charge is given by:

For how many hours of work do the two plumbers charge the same?

This is x for which:

So

The two plumbers charge the same for 2.5 hours of work.

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|