Question

Pre calc, easy answer, not the best WiFi sorry if I get disconnected

Answer 1

So,

First of all, we should remember the following:

In this case, we have the following transformation:

$f(x)=\sqrt[]{x}\to g(x)=3\sqrt[]{x}$

As you can see, we're multiplying the function f by 3. So, this is an example of a vertical stretch of the function f by a factor of 3. So the answer is B.