Which of the following best defines a function? (4 points) a
A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

b
A function is a relationship that defines the connection between two variables.

c
A function is a set of ordered pairs in which no y-value repeats.

d
A function pairs input and output values with no particular pattern.

I'll give brainliest if you answer right : )

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?