Answer:
![Amber = 0](https://img.qammunity.org/2021/formulas/mathematics/high-school/nlb3uufbmo3zybnbgbl7cy93ekzxb7t7gs.png)
![Grace = 0.60](https://img.qammunity.org/2021/formulas/mathematics/high-school/rhsz73ozx1jj28shnojnflw92wsg14srgh.png)
![Marsha =1.70](https://img.qammunity.org/2021/formulas/mathematics/high-school/e253glvw17rrpaype4b3izrune160kq6cw.png)
Explanation:
Given
Decimal Grid = Hundredths
![Amber = None](https://img.qammunity.org/2021/formulas/mathematics/high-school/d9mawxds0dg7dhoczadrhspezf9gn9xahu.png)
![Grace = (3)/(5)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/6j5cq8vb3pmonbzfw3qqud1tvtzvzvidig.png)
![Marsha = 1 + (7)/(10)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/xdbrykek3i0uatv39p3h5x968tw4wkarzb.png)
To solve for each:
We have:
For Amber:
![Amber = 0 * 100](https://img.qammunity.org/2021/formulas/mathematics/high-school/c6sw6kroyoe5ckvqeec665garflhhuzg6e.png)
![Amber = 0](https://img.qammunity.org/2021/formulas/mathematics/high-school/nlb3uufbmo3zybnbgbl7cy93ekzxb7t7gs.png)
For Grace:
![Grace = (3)/(5)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/6j5cq8vb3pmonbzfw3qqud1tvtzvzvidig.png)
![Grace = (3)/(5) * 100](https://img.qammunity.org/2021/formulas/mathematics/high-school/l5tbpuouaqq412eltsgglmm9nay2b57125.png)
![Grace = (300)/(5)](https://img.qammunity.org/2021/formulas/mathematics/high-school/28jina3ml0r2qj3wk4uw53fhwcb4ednteb.png)
![Grace = 60](https://img.qammunity.org/2021/formulas/mathematics/high-school/70ixozz9xmdire09vzz85lirrtkwozrpwd.png)
This means that Grace shaded 60 of the hundredth models.
Decimal shaded is:
![Grace = 60 * (1)/(100)](https://img.qammunity.org/2021/formulas/mathematics/high-school/aedyfz0s52am3mai8urzloke8d5zob9adz.png)
![Grace =(60)/(100)](https://img.qammunity.org/2021/formulas/mathematics/high-school/fnjtfamrqc1x8c2wj22wmqltpl8zauinf9.png)
![Grace = 0.60](https://img.qammunity.org/2021/formulas/mathematics/high-school/rhsz73ozx1jj28shnojnflw92wsg14srgh.png)
For Marsha:
![Marsha = 1 + (7)/(10)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/xdbrykek3i0uatv39p3h5x968tw4wkarzb.png)
![Marsha = (10 + 7)/(10)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/nl6xx5tk8ntojgsn2hkka6dt4yq9696lac.png)
![Marsha = (17)/(10)th](https://img.qammunity.org/2021/formulas/mathematics/high-school/bijbtu4pautt1705lkvb6r126b8qxxdkfj.png)
![Marsha = 1.7th](https://img.qammunity.org/2021/formulas/mathematics/high-school/91mt25yy3eceamr694v7fhcc5pl7jtryk8.png)
Multiply this by 100, to get the number of shaded
![Marsha = 1.7 * 100](https://img.qammunity.org/2021/formulas/mathematics/high-school/31akahmccrctyaxoad324k40ii9pd8lrf5.png)
![Marsha = 170](https://img.qammunity.org/2021/formulas/mathematics/high-school/fevyx6nkmmtf46nzv7e9avzspzz9zfe9fl.png)
This means that Marsha shaded 170 of the hundredth models.
Decimal shaded is:
![Marsha = (170)/(100)](https://img.qammunity.org/2021/formulas/mathematics/high-school/jxitqr16nighow9xem1f0n4lzj3w7jhtdv.png)
![Marsha =1.70](https://img.qammunity.org/2021/formulas/mathematics/high-school/e253glvw17rrpaype4b3izrune160kq6cw.png)