Answer:
A
Step-by-step explanation:
The x- coordinate of each point ( the domain ) maps to exactly 1 unique y- coordinate ( the range).
This means the situation given represents a function → A
Answer:
$0.125 , so 12.5 cents per pencil
Step-by-step explanation:

You can double check this by doing
, making sure it equals 3.
-1 would be your answer. f(0) = -4. f(1) = f(0)+3 so f(1) = -1