He paid $4.29 for every 3 protein bars he bought. He bought 9 protein bars in all. Which equation can be used to determine b, the total amount Coach Fowler spent on protein bars?
One method would be to divide
Now you can make an equation:
Another method is to include the division by 3 in the equation :
This indicates that for every group of 3 bars, the price is $4.29.
The answer will be: