Mrs. Swanson gives out only one type of candy for Halloween.  The local discount store sells six pounds of butterscotch candies for $\$7.50$.  Use proportional reasoning to answer the questions below.  Be sure to explain your answer and organize your reasoning.  

1. What is the cost of $18$ pounds of butterscotch candies?

   Hint (a):

   How much does one pound of butterscotch cost?

   $6$ pounds $=\$7.50$

   $1$ pound $=\$1.25$

   More Help (a):

   How much would $18$ pounds of butterscotch cost?

   Answer (a):

   $\$1.25(18)=\$22.50$

2. What is the cost of $10$ pounds of butterscotch candies?

   Hint (b):

   Follow the steps in part (a).

3. What is the unit rate for butterscotch candies?

   Hint (c):

   One unit of butterscotch is one pound.

   More Help (c):

   See the hint in part (a).