Answer:
7.5 feet
Explanation:
If we look at the yellow line, it is 6 cm.
To find how many times 2cm goes into 6cm, we divide.
![6/2=3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/eo75728q2622dzjf9wtfgmqpgj0sy8dpfo.png)
So, if we reproduce the shape for every 2 cm, we have to multiply the value by 3.
Since every 2 cm will be equal to 2.5 feet, we can multiply the values.
![2.5\cdot3=7.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/htbs1xk73z6prs0jigz74lv5ul6ut5ols5.png)
So Jackie should make the yellow line 7.5 feet long.
Hope this helped!