A plumber charges a one-time fee of $50 plus a fixed hourly rate (h) in dollars. The plumber works at a customer's house for 2 hours and charges a total of $100. Find the hourly rate the plumber charges.

$25 an hour

Step-by-step explanation:

use this equation y = hx + 50

y is the money earned and x is the hours worked

plug in 100 for y and 2 for x

100 = 2h + 50

solve for h

50 = 2h

25 = h

he charges $25 an hour

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )