Answer:
here you go..............
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]
Answer:
y=-3x+b
Step-by-step explanation:
To find whether or not an equation is parallel it has to have the same slope. To find this, you start by subtracting 9x from both sides, leaving you with 3y=-9x-22. Then you divide both sides by 3, leaving y=-3x-
. With this equation you can see that the slope is -3. The answer will be any equation with -3x.
Answer:
10u+8u(2)+2u=28u
Step-by-step explanation: