Use interval notation to describe the set of numbers.
-John is at least 35 years old.
A) $( - \infty , 35 ]$
B) $[ 35,55 ]$
C) $[ 35 , \infty )$
D) $( 35 , \infty )$

Question

Quizplus · Accepted Answer

The phrase "at least 35 years old" means John is 35 years old or older, which is represented by the interval $[35, \infty)$, indicating all numbers from 35 to infinity, including 35.

Use Interval Notation to Describe the Set of Numbers (−∞,35]( - \infty , 35 ](−∞,35]

Use Interval Notation to Describe the Set of Numbers $( - \infty , 35 ]$