The function f(x) is the total amount spent at a store, when purchasing x items that are $5 each and the items are not taxable. What is the practical domain for the function f(x)? 1) all positive integers 2) all real numbers 3) all whole numbers 4) all positive integers that are multiples of 5.

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The function f(x) is the total amount spent at a store, when purchasing x items that are $5 each and the items are not taxable.  What is the practical domain for the function f(x)?  1) all positive integers  2) all real numbers  3) all whole numbers  4) all positive integers that are multiples of 5.

Nichole Watt · Accepted Answer

Answer: all whole numbers Explanation We can purchase no item (i.e. zero item) or any n number of item where n is positive integer. Therefore the practical domain is {0,1,2,3,−−−}, which is set of whole numbers.

The function f(x) is the total amount spent at a store, when purchasing x items that are $5 each and the items are not taxable. What is the practical domain for the function f(x)? all positive, real, whole nuvbers

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