Question

Anna's birthday party costs $1, plus an additional $2 for each guest she invites. Write an equation that shows the relationship between the guests x and the cost y. Write your answer as an equation with y first, followed by an equals sign.

Answer 1

y = $1 + $2x

Explanation:

The one dollar represents the amount of the party alone. The two dollars multiplied by the x gets you how much money will be spent towards guests altogether. Adding these gets you the total cost. (FYI - I put the dollar sign, but you may not need it.)