Luanne buys a piece of fabric that is 7 1/2 feet long. The cost of the fabric is $0.50 per foot and there is 8% sales tax . What is the total cost of the fabric.

$4.05

Step-by-step explanation:

first we have to find the cost of it before sales tax

we can do this with the expression

7.5 *0.5

this simplifies to $3.75

now we just have to find the value after sales task

we can do this with the expression

3.75*1.08

this equals $4.05