Answer: 432 inches
Step-by-step explanation:
Given : length of ribbon needed by Shannon for an art project = 9 feet
As we know : 1 feet = 12 inches
9 feet =
![(12)/(1)* 9=108inches](https://img.qammunity.org/2019/formulas/chemistry/high-school/my7wmgyk7026qjv2oaz1dv2kqysxwcdlkj.png)
Thus if for 1 project , length of ribbon required is = 108 inches
For 4 projects , length of ribbon required is =
![(108)/(1)* 4=432inches](https://img.qammunity.org/2019/formulas/chemistry/high-school/d1ickhnbba8n1u12vdx809am9y06rouw7n.png)
Thus 432 inches of ribbon should she buy if she is making 4 projects.