Sarah is making a balloon arc, with pink and yellow balloons, for decorating her brother’s birthday party. For the balloon arc, she needs 4 more pink balloons than twice the yellow balloons. If she has x yellow balloons, then how many pink balloons are needed to finish making the balloon arc? Write an expression she would use to determine the total amount of balloons needed for the arc.
To determine the total number of balloons needed for the arc, Sarah would use the expression 2x + 4.
To determine the total amount of balloons needed for the arc, Sarah would use the following expression:
Total balloons = 2x + 4
In this expression, "2x" represents twice the number of yellow balloons and "4" represents the additional pink balloons needed.