Question

An online bookstore is having a sale. All paperback books are $6.00 with a flat shipping fee of $1.25. you purchase "b" booms and your total is "c". What is the independent variable?$6.00"c" cost"b" books$1.25

Answer 1

Let:

c = total

a = cost of each book

w = flat shipping fee

Therefore, the total is given by:

`c=ab+w`

where:

b = number of books

`c=6x+1.25`

The independent variable is:

"b" books