Answer:
2
Step-by-step explanation:
6x=4+8
6x=12x= 12/6
x=2
Answer:
192
Step-by-step explanation:
so basically when a problem like this is given out and you do not understand the question or just don't want to the best thing you can do is pick B
Answer:
e
Step-by-step explanation:
e
Answer:

Step-by-step explanation:
You would substitute "2x" for every "x" in the function in the same way you would substitute any other number.
So if f(x)=Sqrt[7x²-3x], then: f(2x)=Sqrt[7(2x)²-3(2x)]
=Sqrt[7(4x²)-3(2x)]
=Sqrt[28x²-6x]