Question

A package of paper towels contains 4 rolls. Each package of paper towels costs $1.99. A function, f(x), is written to represent the cost of purchasing x packages of toilet paper. what is the practical domain for the function f(x)? A. all real numbers B. all whole numbers that are multiples of 4C. all positive integers D. all whole numbers

Answer 1

Given

4 rolls in each package of paper towels

package of paper towels cost $1.99

f(x) =

f(x) = 4x

f(x) = 1.99

f(x) = 1.99 + 4x

f(x) = $1.99 + 4x or f(x) = 4x + 1.99

f(x) = 1.99 + 4x

Option C all positive integers.