Answer:
4n²+2n as a factorial is given as:

Step-by-step explanation:
We are given an expression which has to be converted into factorial form.
The expression is as follows:

Now we know that 2n+1 and 2n differs by '1' and the next smaller term is '2n-1'.
Hence, multiplying and dividing by '(2n-1)!'; we get:

we know that x(x-1)(x-2)! = x!, so:

Answer:
the scale factor is times 0.5
Explanation:
20 plus 10 is 30. Half of 20 is 10 so that is 0.5
It is also like that for the others
Answer:
127.53 liters left after 10 minutes
Step-by-step explanation:
Let


Given
--- initial
--- the amount left, after 5 minutes
Required
--- amount left after 5 minutes
To do this, we make use of:

implies that:

Divide both sides by 200

Take natural logarithm of both sides



So, we have:

Divide by 5

So, the function is:


The amount after 10 minutes is:



No it is not a function. You have to be able to write y=mx+b
Answer:
flute
Step-by-step explanation: