Sherice can fill lemonade cups at a rate of four cups per minute.  

1. How many cups can she fill in $6$ minutes?

   Hint (a):

   To find the number of cups filled in a certain amount of time, multiply the rate by the time.

   More Help (a):

   $\left(\frac{4\; \text{cups}}{\text{minute}}\right)\cdot (6\; \text{minutes})$

   Answer (a):

   $24$ cups

2. How many cups can she fill in $10$ minutes?

   Hint (b):

   See the help for part (a).

3. If Sherice fills $c$ cups in t minutes, write an equation that relates $c$ and $t$.

   Hint (c):

   Notice that in parts (a) and (b), the rate must be multiplied by time $\left(t\right)$ in order to find the number of cups (c).

   Answer (c):

   $c = 4t$