Given parameters: 
Length of fabric needed to make a pillow = 0.8m 
Cost of fabric per meter = $1.5
Unknown: 
Cost of the 0.8m fabric = ?
Solution: 
 The cost of the fabric = cost per meter x length of fabric
 Input the parameters and solve; 
 Cost of the fabric = 0. 8 x 1.5 = $1.2
Dustin will have to $1.2 for the fabric