Write an expression in words that describes the set of numbers given by the interval. $$[ 9 , \infty )$$
A) All real numbers less than 9.
B) All real numbers less than or equal to 9.
C) All real numbers greater than or equal to 9.
D) All real numbers greater than 9.

Question

Quizplus · Accepted Answer

The interval $[9, \infty)$ includes all real numbers that are greater than or equal to 9, which matches choice C.

Write an Expression in Words That Describes the Set of Numbers