I believe it would be B observational sampling
Answer:

Step-by-step explanation:
Anything set to equal <em>x</em> is considered an undefined <em>rate of change</em> [<em>slope</em>], which is a <em>vertical line</em>. This is not a function, since it flunks the <em>vertical line test</em>.
I am joyous to assist you anytime.
Answer:
X/18=6/4
Step-by-step explanation:
4hrs=6 logs
18hrs=x
4x=18×6
Which can also be written as

Your answer is 6 because 6 is the smallest number that is divisible by both 2 and 3
Answer:
Natalie has 4 apples left
Step-by-step explanation:
one bag is 8 apples and only has 4 left so it cant fill another bag let alone 4, so a is out. Natalie has 4 apples, not 4 bags, so there goes B. The only one left is C Natalie has apples left after filling 51 bags.