Mary's sink was clogged, so she called a plumber. the plumber charges a service fee of $50 as well as $25 for each hour he worked. if mary paid $135.50, write an equation to find the number of hours, h, that the plumber worked.

The plumber worked 3.42 hours

Step-by-step explanation:

25h+50=135.50 (minus 50 to both sides)

25h=85.50 (divide 25 to both sides)

h=3.42

Check:

25(3.42)+50=135.50

85.50+50=135.50

135.50=135.50

b) 36

step-by-step explanation:

18 times 2 is 36