Question

Find the range of the function f(x)= sqrt 12x+24

A. y≤12
B. y≥24
C. y≤0
D. y≥0

Answer 1

sqrt(12 x+24)

a square root function becomes undefined if the quantity under the root is zero.

i.e. sqrt(0)=undefined. So that is your only restriction; you have to find what values of x will make the quantity under the root zero.

12x+24=0 --> x=-2

So, all numbers other than -2 can be plugged in for x. -infinity < -2 < +infinity is the range

Answer 2

so my answer would be B right?

Answer 3

Did you mean sqrt(12 x) + 24 cause then the answer is C y>=0

Answer 4

Oh sorry lol I mistaked that for another question hahah yes I ment to say C