The table below shows the number of skateboards sold at a skate shop each week for five weeks.
w # of weeks | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
s # of skateboards sold | 22 | 44 | 66 | 88 | 110 |
Which equation represents the relationship between w, the number of weeks and s the number of skateboards sold?
Let's try these, one at a time:
The first formula: s = 22w
Using this equation, replace w with 1, and s = 22. Replace w with 2, and s = 44. Replace w with 3, and s = 66. Replace w with 4, and x = 88. Replace w with 5, and s = 110.
This works! This must be the correct formula.
If it didn't work, then try the second formula, etc.
Let's try these, one at a time:
The first formula: s = 22w
Using this equation, replace w with 1, and s = 22. Replace w with 2, and s = 44. Replace w with 3, and s = 66. Replace w with 4, and x = 88. Replace w with 5, and s = 110.
This works! This must be the correct formula.
If it didn't work, then try the second formula, etc.