Question

The interval notation [-1,12) is equivalent to saying -1≤1x<12.

Answer 1

Step-by-step explanation

a way of writing subsets of the real number lines is by using intervals,

let's chec

A) closed interval

this includes the endpoints

`\lbrack a,b\rbrack`

it means a and b are part of the interval, we use the closed brackets

B)open interval

this interval is one that does not include its endpoints

`(a,b)`

it means a and b are not part of the interval

C) combinatios

`\begin{gathered} (a,b\rbrack \\ \lbrack a,b) \end{gathered}`

so, we have the interval

`\lbrack-1,12)`

it means -1 is part of the set and 12 is not part of the set

as -1 is part of the interval, we need the number equal or greater than -1