Question

Odell prints and sells posters for $20 each. Each month 1 poster is misprinted and cannot be sold. How do you write a linear equation that represents the total amount Odell earns each month taking into account the value of the poster that cannot be sold?

Answer 1

`y=20x-20`

Explanation:

Let `x` be the number of posters he sells each month. Since each poster is $20,

`y=20x` ($20 * the number of posters sold)

However we have to subtract a poster. We know that 1 poster is $20,

`thereforey=20x-20`

(`y` is the total amount Odell earns each month taking into account the value of the poster that cannot be sold)