Answer:
![6 (3)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rfx63twhfsp2kirq453xemf1ng0mv1cja8.png)
Explanation:
Let's start by turning 8 1/2 into an improper fraction, which would be 17/2. To find the amount of cups needed for a cake that is 3/4 of a full cake, we multiply 17/2 by 3/4.
![(17)/(2) *(3)/(4) = (17*3)/(2*4) = (51)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8numybtqto9ww7x7o8uu5dw3y4dmstnft8.png)
Turn the fraction into a mixed number:
![6 (3)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rfx63twhfsp2kirq453xemf1ng0mv1cja8.png)
That should be the correct answer. Hope this helps!!!