For the given table, the difference between two consecutive y terms are

It means the difference is constant. So the given function is in arithmetic progression.
And to find the equation, representing the given series, we will use the formula for the nth term of arithmetic series, which is

Here,

So we will get

Answer:
D. 7 units
Step-by-step explanation:
Using the formula: A= area a= base 1 b= base 2
H = 2 <u> A </u>
a + b
H = 2 <u> 98 </u>
8 + 20
H = 2<u> 98 </u>
28
H = 2( 3.5)
H = 7
72x + 436= -96x + 1108x
72x+436=1012x
436=1012x−72x
436=940x
436/940=x
109/235=x
x=109/235
Hope this helps have a blessed and wonderful day!
Note that Range = Max – Min.
In this case, Max = 452452, Min = 221221.
Hence, Range = 452452 – 221221 = 228230.
Sample Variance:

where n = 4,

Hence
![s^2= \frac{1}{4-1}[( 419419 - 374374)^2 + (452452-374374)^2+\\ (404404-374374)^2+ (221221-374374)^2)]\\ = 1.0828 \times 10^{10} ](https://tex.z-dn.net/?f=%20s%5E2%3D%20%5Cfrac%7B1%7D%7B4-1%7D%5B%28%20419419%20-%20374374%29%5E2%20%2B%20%28452452-374374%29%5E2%2B%5C%5C%0A%28404404-374374%29%5E2%2B%20%28221221-374374%29%5E2%29%5D%5C%5C%0A%3D%201.0828%20%5Ctimes%2010%5E%7B10%7D%0A)
Then standard deviation =
Note
16 cups = 1 gallon (US)
or
18.2 cups = 1 gallon (UK)
We shall use the US gallon for the calculation, therefore
1 gallon = 16 cups.
Answer: 16