Answer:
b
Step-by-step explanation:
For y to not be a function of x, there needs to be an x-value that is paired with more than one y-value.
In terms of the sets, you need to find a set where the same x-value is used more than once in two (or more) different (x,y) pairs.
This occurs in the third set, where x=6 is used twice.
Using .25N, you set N equal to 18 for 18 quarters. so .25(18) = 4.50
Answer:
x = 15
Step-by-step explanation: