Question

If the function f(y) = n models the number, n, of inches a tree grows in a year, y, which describes an appropriate domain for the function?
Responses
A all integers where y > 0all integers where y > 0
B all integers where y ≥ 0all integers where y ≥ 0
C all rational numbers where y > 0all rational numbers where y > 0
D all rational numbers where y ≥ 0

Answer 1

wrong

Answer 2

The function \( f(y) = n \) models the growth of a tree in inches per year, where \( y \) represents the number of years. Since time (in years) cannot be negative and we typically count years in whole numbers (integers), the most appropriate domain for the function would be all non-negative integers.

Thus, the correct answer is:

**B: all integers where \( y \geq 0 \)**.