Question

Select all representations for the domain of a function given by the number of hours slept in one day. (2 points)
Responses

(0, 24)
(0, 24)

{x | 0≤ x ≤24}
{x | 0≤ x ≤24}

(24, ∞)
(24, ∞)

{x| x∈R}
{x| x∈R}

[0, 24]
[0, 24]

[0, ∞)
[0, ∞)

{x| x>24}

Answer 1

Correct choices: {x | 0 ≤ x ≤ 24} and [0, 24] (select both copies of each if duplicates are shown).

Reason: hours slept can be any real number from 0 up to 24 inclusive, so the domain is the closed interval [0,24].