Answer:
21 + 4 = 25
Step-by-step explanation:
this is the answer because the temperature fell 4 degrees in the last hour.
so we have to add back that 4 to get the answer.
our equation will be 21 + 4 equals 25.
hope this helps!
sakuracherry
None of the offered choices is correct.
The radical cannot be simplified. If rewritten, it must be written as something like
or
so our slope is undefined, that means a vertical line, check the picture below
Then that would be 3 and 9.