Which sets of ordered pairs represent relations that are functions? you may choose more than one correct answer.

a. {(1, 0), (2, 0), (3, 0), (4, 0)}
b. {(2, 3), (2, 4), (2, 5), (2, 6)}
c. {(1, 1), (2, 2), (3, 3), (4, 4)}
d. {(1, 3), (-1, 4), (1, 4), (-1, 3)}
e. {(6, -6), (-6, 6), (5, -5), (-5, 5)}

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △