Below are some new distances with given lengths to help Cecil cross the tightrope. Find at least two ways to get Cecil across. Write your solutions as numerical expressions.

1. Span of tightrope: $6$ feet

   Given lengths: $1$, $3$, $4$ feet

   Hint (a):

   Arrange the arrows so that they have a net length of $6$ feet.

   Use the eTool below to test solutions.
   Click the link at right for the full version of the eTool: 2-37a HW eTool 

2. Span of tightrope: $8$ feet

   Given lengths: $2$, $5$, $7$ feet

   Hint (b):

   Arrange the arrows so that their net length is $8$ feet.

   Use the eTool below to test solutions.
   Click the link at right for the full version of the eTool: 2-37b HW eTool