Answer:
B.
Step-by-step explanation:
Every answer besides B. has an input that repeats. A function contains inputs that have exactly one output. This means x values cannot have more than one y value.
Answer: 0
Step-by-step explanation:
23.70/1.8 = 13.16666....
Rounding to the nearest hundred is 0, because 13 is less than 50.