The first one is the right answer
Answer:

Step-by-step explanation:
This limit can be written as follows

Direct substitution means that we substitute in the value for x to get our limit

Answer:

Step-by-step explanation:
We are given the two functions:

And we want to find:

This is equivalent to:

So, evaluating f(-1) first, we acquire:

Then by substitution:

So:

Therefore:

Your answer is indeed correct.
We can use the Pythagorean theorem:
c² = a² + b²
In this case:
6² = 3² + 4²
36 = 9 + 16
36 = 25 ( not correct )
This is not a right triangle.
Answer:
B ) The triangle in question is not a right triangle.