Answer: 10.08 feet.
Explanation:
Let's make the following conversions:
1.5 yards to feet:
![(1.5yd)((3ft)/(1yd))=4.5ft](https://img.qammunity.org/2020/formulas/mathematics/high-school/yn0c4ty93y4v9c4gt2k5edw3ra1eglkcbx.png)
7 inches to feet:
![(7in)((0.0833ft)/(1in))=0.58ft](https://img.qammunity.org/2020/formulas/mathematics/high-school/4sd8r7l2sm73cjpe4xdn4so49lpvhszsln.png)
Then, the height of Bonnie is:
![5ft+0.58ft=5.58ft](https://img.qammunity.org/2020/formulas/mathematics/high-school/vhe1l7ysjm04irjfwysmzzfuzl7cakoqc2.png)
If the stilts increase a person's height by 1.5 yards or 4.5 feet, then you must add this height by Bonnie's height to calculate how tall she will be. Then:
![=5.58ft+4.5ft=10.08ft](https://img.qammunity.org/2020/formulas/mathematics/high-school/4mwcw7gsv5h8ipjpq19gcs1b10vk7slxkf.png)