Answer:
d. The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.
Step-by-step explanation:
This would be a function as long as one x-value doesn't correspond to two y-values. If two x-values correspond to one y-value though, it still represents a function.
The correct answer is b), the probability of B occurring given A has occurred.
It should be 121, or +4 or -4 from that. But I am pretty sure it is 121
The answer is C. Identify property of addition