Answer:
A and B are functions
Step-by-step explanation:
for A, none of the x's repeat which makes it a FUNCTION
for B, when it starts with x^2, it will always be a FUNCTION (its a quadratic)
for C, 10 repeats for the x so it is NOT A FUNCTION
Answer:
Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.
Step-by-step explanation:

That would be the median I think...
Answer: length is 8
Step-by-step explanation:
its just 24 divided by 3 = 8
Okay so if the price of an original coat was 100 dollars they would become 75 dollars