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.

Question

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?

Answer 1

y = 18h +0.05s

or

y = 18h + s/20 where h probably = 8 hours for one day's work

y=18(8) + s/20

y = 144 + s/20