Steps:
___________
a+b
2.5+(-10.8)
= -8.3
Mean is just the average of all of them
So... 5 + 4 + 18 + 19 + 12 + 20 + 12 + 12 = 102
Then you divide that number by the amount of numbers you have so 102 / 8 = 12.75 or rounding it up to 13
For median you have to first put them in order from smallest to largest.
So 4 5 12 12 12 18 19 20
Then you have to find the middle number between them but in this case we have two... 12 and 12. Since they're the same number, the median is 12.
Answer:

Step-by-step explanation:

For x=0

For x=1

For x=2

For x=3

The answer is d. Is it right?
We will find the volume by multiplying length * width * height, like this:
10 cm * 3 cm * 2 cm = 60 cm^3
For ml, when we talk about volume, we know that the 1 ml = 1 cm^2, so the answer for ml is 60ml.