Question

is my answer [5,infiniti)?
find the domain
f(x) = sqrt5-x

Answer 1

yes

Answer 2

\[\sqrt{5-x}\]\[domain:[5,\infty)\]

Answer 3

Thank you!when it says less than or equal to I know its a [ or ] but how do I know when to use them in these problems?

Answer 4

[ or ] means including, ( or ) means not including...if you ever have infinity it's always ( or ) because infinity is not inclusive since it is not an exact number

Hope that helps! :)