Which of the following functions is a one-to-one correspondence?

Question 19 options:

f: , where f(n) = n + 1

f: , where f(n) = 5n + 2

f: , where f(x) = 2x - 1

f: , where f(n) = 6n

Consider the function f: , where f(n) = 2n + 1. Which of the following correctly describe domain, codomain and range?

Question 20 options:

The domain and range are the set of all integers, but the codomain includes only the odd integers

The domain, codomain are range are the set of all integers

The domain and range are the set of all integers, but the codomain includes only the odd integers

The domain and codomain are the set of all integers, but the range includes only the odd integers