Question

How do you find the domain and range of `f(x)=sqrt(24-2x)`?

Answer 1

( - infinity , 12 ]

Explanation:

1/ 24 - 2x `>=` 0
2/ -2x `>=` -24
3/ x `<=` 12 (divided by a negative number, so had to reverse the direction of the inequality symbol)
Answer : ( - infinity , 12 ]