I love my mains to yall

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,