Answer:
Domain (b) = {0, 1, 2, 3, 4....}
Set of all whole numbers
Step-by-step explanation:
Given: A box of pencils costs $10.
Total cost (c) = 10b, where "b" is the number of boxes.
Here c represents the range which is dependent variable and b represents the number of boxes which is independent variable.
For instance, if you buy 10 boxes of pencils, you need to pay = 10(10) = $100
Here we replace b with the number of boxes.
The number of boxes cannot be negative. It will star from 0,1, 2, 3....
Therefore, domain (b) = {0, 1, 2, 3, 4....} which is set of whole numbers.
= 1.4142....... which is an irrational number