Domain & Range Real World
Identifying Domain & Range
100

Which domain would be the most appropriate set to use for a function that involves the number of people in the household?

whole numbers

100

Identify the Domain of the following set: 

{(-2,0), (-1,3), (-8,4)}

{-2, -1, -8}

200

A construction company uses the function f(p), where p is the number of people working on a project, to model the amount of money it takes to complete a project. A reasonable domain for this function would be

positive integers/whole numbers

300

A construction company uses the function f(p), where p is the number of people working on a project, to model the amount of money it takes to complete a project. A reasonable RANGE for this function would be

positive real numbers

400

A store sells self-serve frozen yogurt sundaes. The function C(w) represents the cost, in dollars, of a sundae weighing w ounces. An appropriate domain for the function would be

positive real numbers

500

An online company lets you download songs for $0.99 each after you have paid a $5 membership fee. Which domain would be most appropriate to calculate the cost to download songs? 

Choice 1) rational numbers greater than zero

Choice 2) whole numbers greater than or equal to one

Choice 3) integers less than or equal to zero 

Choice 4) whole numbers less than or equal to one

Choice 2) whole numbers greater than or equal to one