Question

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?

A. n+5=13; Alexa popped 8 balloons.
B. n-5=13; Alexa popped 18 balloons.
C. n-13=5; Alexa popped 18 balloons.
D. n+13=5; Alexa popped 8 balloons.

Answer 1

The equation n + 5 = 13 can be used to determine the number of balloons Alexa popped. Alexa popped 8 balloons.

So, the correct equation is

5+n=13, and Alexa popped 8 balloons.

Step-by-step explanation:

To determine the number of balloons Alexa popped, we can use the equation n + 5 = 13, where n represents the number of balloons Alexa popped.

This equation can be derived from the information given in the question: Krista popped 5 balloons and together they popped a total of 13 balloons. Solving the equation, we can find that n = 8. Therefore, Alexa popped 8 balloons.

The question asks for the correct equation to determine the number of balloons Alexa popped if Krista popped 5 balloons and together they popped a total of 13 balloons. The correct equation must represent the total number of balloons popped (5 by Krista plus n by Alexa) equaling 13.

This is illustrated by the equation n + 5 = 13. To find the value of n, you simply subtract 5 from 13, which gives you Alexa popped 8 balloons.