Question

The solution to an inequality is (–∞, 6.5]. Is 6.5 a solution to the inequality? Explain your answer.

A.The solution includes numbers from negative infinity to 6.5. Because a bracket is used, the solution does not include 6.5.
B.The solution includes numbers from 6.5 to infinity. Because a parenthesis is used, the solution does not include 6.5.
C.The solution is the point (–∞, 6.5). Because a bracket is used, 6.5 is a solution to the inequality.
D.The solution includes numbers from negative infinity to 6.5. Because a bracket is used, the solution includes 6.5.

Answer 1

Is it D? >.<

Answer 2

Or C?

Answer 3

Brackets: [ and ]
Parentheses: ( and )

With brackets, the number next to it is included.
With parentheses it is not.
Now pick the right answer...

Answer 4

So, I was right the first time. It's D.

Answer 5

Right!

Answer 6

Thanks!

Answer 7

yw