C. 6

the coefficient is the number in front of the variable (letter)
Answer:
40 cups
Step-by-step explanation:
We need to convert from quarts to cups using a conversion factor
We know that 1 quart = 4 cups
10 quarts * 4 cups
----------- = 40 cups
1 quart
Parabola
It's not always easy to visualize this stuff. Do a Google image search for "3D Conic Sections" and take a look at a bunch of the results. That may help a bit. Let me know if you have any other questions.
Answer:
4.
Step-by-step explanation:
To find a function none of the x-values can be the same. For example, #1 isn't a function because 2 of the x values re 2 meaning it is not a function. #4 is a function because all of the x values are different numbers.