Answer:
2(3-x)-12+4x
6-x-12+4x
6-x-8x
6+8x =
14x
Step-by-step explanation:
Divide by 50 then divide by ten then just add that to 68 the divide by 5
Answer:
<h2>560</h2>
Step-by-step explanation:
You must use a combination:

We have <em>n = 16</em>, <em>k = 3</em>.
Substitute:

300, because 8x20=160 so 1 ounces= 20 calories
15x20=300
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]