Match each ordered pair on the left with the functions on the right

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

Find the ratios of the corresponding sides