Two yards of fabric cost $13, and 5 yards of fabric cost $32.50. Which equation relates the cost of the fabric c to its length l?

1 Answer
Nov 4, 2016

Answer:

#c=6.5l#
Cost is $6.50 per yard.

Explanation:

Just by reading out the equation in terms of the variables, I interpret:
#2l=13# and #5l=32.5# After simplifying these, we get:
#l=6.5#. In context, this means that one yard of fabric costs $6.50. As the number of yard of fabric increases, cost increases, so
#c=6.5l#.