Question

Kinsley is raising butterflies for her science fair project. She kept track as her s swallowtail butterflies and 13 monarch butterflies hatched. In all, Kinsley has 21 butterflies.
Which equation models the story?






Questions

Answer 1

To model the situation where Kinsley has both swallowtail and monarch butterflies, we can use an equation to represent the total number of butterflies she has.

Let \( x \) represent the number of swallowtail butterflies. We know that Kinsley has 13 monarch butterflies, and the total number of butterflies is 21.

The equation that represents this situation is:

\[ x + 13 = 21 \]

This shows that the number of swallowtail butterflies \( x \) plus the 13 monarch butterflies equals the total of 21 butterflies.

You can solve for \( x \) to find the number of swallowtail butterflies:

1. Subtract 13 from both sides:
\[ x = 21 - 13 \]
\[ x = 8 \]

So, Kinsley has 8 swallowtail butterflies and 13 monarch butterflies.