Respuesta :
Answer:
r = 9.50x
Step-by-step explanation:
First, we need to find how much money Derrick earns per hour. To do that, we divide how much money he earned by the three hours that he worked:
- [tex]\frac{28.50 earned}{3 hours worked}[/tex]= $9.50 earned/hour
So every hour, Derrick makes $9.50. Now that we know the hourly rate, we can make an equation that will always tell us how much money he makes (r), given the hours (x):
- r = 9.50x (where " x " is the number of hours and " r " is the amount of money he makes)
CHECK:
Let's check our answer. Since we have the equation, let's see if in 3 hours, Derrick actually earned $28.50:
- Equation: r = 9.50x
- x = 3 hours, r should equal $28.50
- r = 9.50(3 hours) = 28.50
- r = $28.50 ✓
The equation works! By substituting the number of hours, we got the right answer.
