SOLUTION: Mark works at a popular electronics retail store. He earns a fixed income of $18 an hour and a 5% commission on the sales he makes. Let's say, y = earnings h = number of ho

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Mark works at a popular electronics retail store. He earns a fixed income of $18 an hour and a 5% commission on the sales he makes. Let's say, y = earnings h = number of ho      Log On


   



Question 1018543: Mark works at a popular electronics retail store. He earns a fixed income of $18 an hour and a 5% commission on the sales he makes.

Let's say,
y = earnings
h = number of hours worked
s = amount of sales

Which of these equations correctly indicates how much Mark earns in a day?

Found 2 solutions by addingup, Marz157:
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
what does the problem say? Does it say he makes a commission on hours worked? What is his commission based on?

Answer by Marz157(7) About Me  (Show Source):
You can put this solution on YOUR website!
So, we are trying to create a formula for y (earnings). It looks like Mark gets income from 2 different sources. An hourly wage for $18 an hour and some percentage of his sales. His total earnings will be the sum of these two things
When we say that someone makes $X an hour, that means we should multiply that many dollars by how many hours they worked to get the total amount of money they made
Example: If I work 4 hours at $18 an hour, I made 4*18 = 72 dollars.
So money that he earned from his hourly wage is 18*h
The problem also says that he makes 5% commission. That means he earns 5% of what ever he sold. Another way to think of percent is "how many out of a hundred", so for every $100 worth of stuff he sold, he earns $5
5% when written as a normal number is 0.05 (you could also write this as 1/20 and we can multiply that by the amount of stuff he sold to get his earnings for his commission .05 * s
The sum of these two should give you your answer.