1) A. Biased because the population could be uneven. Too many of one ethnicity, too many of one gender, etc.
2) I believe this one is C. because there are not enough people. You need to survey the majority of parents instead of a selected few.
3) There are 80 green marbles per 500, therefore calculate the percentage.

or

percent. Multiply

percent or

times 25. It gives you

.
4) This one is a probability thing too. For every 500 batteries, there are 3 that are defective, therefore,

.

5) Yet another one. Add up all the nuts and you get

. The chance of getting a cashew from these

is:

.
Therefore:
Answer:
Vertex : 5
Y - intercept : (0,-4)
Step-by-step explanation:
-4 is on the y-axis.
Vertex is the maximum or the minimum point of the parabola.
Answer:
It's B ( just did it )
Step-by-step explanation:
Looked up the answer real quick and the person had the same question with a picture.
It's on Ed2020 it's B
Answer:
i think the first and last one.
Step-by-step explanation: