Which set of ordered pairs represents a function? \{(1, 1), (5, -9), (1, 7), (8, -4)\}{(1,1),(5,−9),(1,7),(8,−4)}
\{(-9, -1), (-9, 5), (9, 6), (-7, 7)\}{(−9,−1),(−9,5),(9,6),(−7,7)} \{(-7, 7), (1, -9), (6, 7), (-1, 3)\}{(−7,7),(1,−9),(6,7),(−1,3)}
\{(-7, -6), (-4, 2), (-7, -9), (1, -6)\}{(−7,−6),(−4,2),(−7,−9),(1,−6) }

Neal buys a board game. he pays for the board game and pays $1.54 in sales tax. the sales tax rate is 5.5%. what is the original price of the board game, before tax

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?

Which of the following inequalities matches the graph? a. 2x+y< 7 b. 2x-y> 7 c. 2x+y< -7 d. the correct inequality is not listed