You recently got a job as an usher at the nearby movie theater. Last night, you had the opportunity to work but decided to take your very first vacation day. Suppose you could have earned $8per hour for three hours of work. Instead, you went to a movie yourself, where you spent $15 on a ticket and popcorn. Your opportunity cost to see the movie was .

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.