The domain is the set of all allowed x values. In this case, we consider the whole numbers between 0 and 10. So we have x = 0, x = 1, x = 2, ... all the way up to x = 10.
To find the y values, you replace each x with the numbers mentioned and simplify.
For instance, if x = 2, then,
f(x) = 3.50x
f(2) = 3.50*2
f(2) = 7
This tells us that x = 2 packages cost y = 7 dollars.
Domain is the x value, range is the y value. you cant have any duplicates. so if your table was (5,3) (6,3) (1,9) (5,7) the domain would be 5,6,1 the range would be 3,9,7 you can repeat them if there is the same number in the range and the domain. for example (5,3) and (3,9) you would put 5 and 3 as the domain and 3 and 9 as the range. the range is the second number, the domain is the first in an ordered pair
