Question

Use interval notation to define each interval. All real numbers within 10 units of 12.

Answer 1

ten units to the right takes you up to \(12+10=22\)
how about ten units to the left?

Answer 2

How would you write that in interval notation though?

Answer 3

can't do it until you know what ten units to the left of 12 is

Answer 4

2

Answer 5

ok so between 2 and 22
interval notation is \([2,22]\)

Answer 6

So it would be brackets instead of parentheses?

Answer 7

That is what I put on my paper but my algebra 2 teacher counted it as wrong.

Answer 8

hmmm maybe there's more to it, if we had a quick screenshot maybe to check it out

otherwise the answer [2, 22] is correct