Question

Wrist bands are $1.25 each. Write a direct proportion equation to show the total cost (c) for any number of bands (b)

Answer 1

`c=1.25b`

Explanation:

If we know that each band costs $1.25, then we know that 2 bands are $2.50, 3 bands are $3.75 etc. The equation above simply states that each band is $1.25, so $1.25 multiplied by the number of bands gives us a total cost. This follows the formula
`y=kx`, for a direct proportion equation. Hope this helped :)