Krista and Alexa played balloon darts in a school fair. Krista popped 5 balloons and Alexa popped n balloons.

Together, they popped a total of 13 balloons. Which equation can be used to determine the number of balloons
Alexa popped? How many balloons did she pop? (1 point)
On - 5 = 13; Alexa popped 18 balloons.
On + 5 = 13; Alexa popped 8 balloons.
On - 13 = 5; Alexa popped 18 balloons.
On - 5 =
13; Alexa popped 18 balloons.

1 answer

The equation that can be used to determine the number of balloons Alexa popped is "On + 5 = 13", where "n" represents the number of balloons Alexa popped.

By rearranging the equation, we have "On = 13 - 5".

Substituting the values, "On = 8".

Therefore, Alexa popped 8 balloons.