The function f(x) = 0.5x + 3 is used to estimate the number of pounds of potatoes a caterer plans to make depending on the number of people being served, x. The mathematical domain for the function is the set of real numbers.
Answer
A
The reasonable domain contains only positive real numbers.
B
The reasonable domain contains only positive whole numbers.
C
The reasonable domain contains only real numbers greater than 3.
D
The reasonable domain contains only rational numbers greater than 3.