Apackage of paper towels contains 3 rolls. each package of paper towels costs $2.79. a function, f(x), is written to represent the cost of purchasing x packages of paper towels. what is the practical domain for the function f(x)? (a) all whole numbers that are multiples of 3 (b) all positive integers (c) all real numbers (d) all whole numbers

(b) all positive integers

Step-by-step explanation:

We know that the domain of a function is the set of all values for x (independent variable) for which the function must be defined.

Given: A package of paper towels contains 3 rolls. Each package of paper towels costs $2.79.

A function, f(x), is written to represent the cost of purchasing x packages of paper towels.

i.e. the number of towels must be a positive integer .

Hence, the practical domain for the function f(x) must be  all positive integers.

$650 per month plus utilities

step-by-step explanation:

just based on the info you gave, it would seem more cost effective to rent at $650 per month plus utilities.   if utilities are, in fact, $150 per month, your monthly living costs would be $800 as opposed to the other option of $825.