Answer: The answer is
![(5)/(8)~\textup{cups}.](https://img.qammunity.org/2020/formulas/mathematics/high-school/9anm5mvgya5rv45irprui04vnf6rw8aeim.png)
Step-by-step explanation: Given that Elizabeth made an English muffin pizza by adding the following quantities of cheese and sausage..
Cups of cheese used by Elizabeth is given by
![C_c=(1)/(4)~\textup{cups}.](https://img.qammunity.org/2020/formulas/mathematics/high-school/g6xbveaa4twn4orueph4v2emuiozxetrdw.png)
And cups of sausage used by Elizabeth is given by
![C_s=(3)/(8)~\textup{cups}.](https://img.qammunity.org/2020/formulas/mathematics/high-school/je1i9q7zjrq3gctt2ebpzgg6abz5r1nqhp.png)
Therefore, total number of cups of toppings used by Elizabeth is
![C=C_c+C_s=(1)/(4)+(3)/(8)=(5)/(8)~\textup{cups}.](https://img.qammunity.org/2020/formulas/mathematics/high-school/h7u2behv4aonyga3oie7cunda5vghrxl3s.png)
Thus, the number cups of toppings used is
![(5)/(8)~\textup{cups}.](https://img.qammunity.org/2020/formulas/mathematics/high-school/9anm5mvgya5rv45irprui04vnf6rw8aeim.png)