SOLUTION: Which is the given inequality in interval notation? x<2 A. x e (-infinity,2) B. x e (2,infinity) C. x e [2,infinity) D. x e (-infinity,2]

Question 923251: Which is the given inequality in interval notation?
x<2
A. x e (-infinity,2)
B. x e (2,infinity)
C. x e [2,infinity)
D. x e (-infinity,2]
Answer by KMST(5347) (Show Source): You can put this solution on YOUR website!
(-infinity,2) is
from -infinity (considered not included because -infinity is not really a number
to 2, with 2 not included.
That is all real numbers x, such that x<2.
That is the answer in interval form.
You do not want (-infinity,2], because that includes x=2 (that is what the square bracket next to the 2 means.
The other answers include numbers like x=5 that are not less than 2.
RELATED QUESTIONS
The function y=ln(x+10)-2 a. has domain (-infinity, infinity) and range (-infinity,... (answered by lwsshak3)

What is the domain and range of the function f( x)=sin^-1 (x) The correct answer is one (answered by MathLover1)

(infinity sign) stands for where an infinity sign is supposed to be (_) stands for where (answered by MathLover1)

I'm having some trouble with this problem: Solve the inequality x^2 less than or equal (answered by Theo)

the function (x-1)/((x-4)*(sqrt(x+2))) is negative for x in? A)(1,4) B)(- infinity,4) (answered by josgarithmetic)

What is the expression for the solution in this interval notation? 5-x is is < or = to 0 (answered by jim_thompson5910)

Find the domain of f(x)=7+(sqrt3x+21), and express it using interval notation.... (answered by Nate)

x^2-14x+48<0 The answer choices are: A (4,12), B (6,8), C (-infinity,6) U (8,... (answered by KMST)

I'm confused with this problem. 6x+2(x-10) > 8x-7 (A) (-infinity, 0) (B) 0 (C) -infinity, (answered by ewatrrr)