Question

Jake is stocking paper towels onto the shelves at the local grocery store. Each case contains 12 rolls of paper towels. a customer purchased 4 rolls of paper towels from one of the cases. Which function shows the relationship between y, total number of rolls paper towels remaining on the shelves, and x, the number of cases on the shelves?

Answer 1

each case contains 12 paper rolls.

It is given that total number of rolls paper towels is y

and x is the total number of the case,

then y can be represented in term of x

y = 12x

but it is given that 4 rolls are purchased by the customer, we will subtract 4 from total

so now the equation for the total rolls will be,

y = 12x - 4

so it is the equation for total rolls remaining in the store.

And the correct answer is option A.