Question

13. Ruby is having a Hot Dog party. She has 15 hot

dogs but needs to purchase more hot dogs. She can
purchase up to 8 boxes of hot dogs. Each box
contains 32 hot dogs. Ruby cannot purchase partial
boxes. The function that models the number of hot
dogs Ruby has is f(b) 32b + 15, where b is the
number of hot dogs purchased.
What is the practical domain and range of the
function?​

Answer 1

What We Know:

She can buy up to 8 boxes. Each box had 32 hot dogs. She can't buy partial boxes.

What We Need To FInd Out:

Practical Domain and Range.

On a graph, domain is the x value, (on the horizontal line,) and range is the y value, (on the vertical line.) She can buy 8 boxes. Practically, she wouldn't buy zero boxes of hot dogs, so it's 1-8. She has 15 hot dogs already, so add that to the first 32. 47-271.

So, if I'm correct...

Domain: 1-8

Range: 47-271

Please let me know if this is helpful.