Question

The time a cake must bake is between 25 and 30 minutes, inclusive.

A) 25 < x < 30
B) 25 *less than or equal to* x *less than or equal to* 30
C) 25 *less than or equal to* x *greater than or equal to* 30
D) 25 < x > 30

Answer 1

let x = the time the cake bakes

Answer 2

the time is inbetween 25 and 30 and includes 25 and 30 exactly

Answer 3

< and > means the end points are not included
\[\ge~~or~~\le ~~~endpoints ~are~included\]

Answer 4

so you have x is greater than or equal(inclusive) 25 AND x is less than or equal (inclusive) to 30

\[25 \le x \le 30\]

Answer 5

So A ?

Answer 6

Do you understand the meanings of the signs?

Answer 7

yeah I do. I just want to make sure i got the right answer so i don't get it wrong. Thanks :)

Answer 8

It is B.
The problem says that the times are inclusive. You show inclusion by writing "less than or equal to" or "greater than or equal to" A does not have any of this.

Answer 9

You mean type in the signs of less or greater than or equal to right?

Answer 10

Yes

I'm on my iPad, using safari, so I can't type the signs.

Answer 11

Neither can i lol thats why i use my special *. . . *'s