Not much time !

which of the relations given by the following sets of ordered pairs is not a function?

select one:
a. {(52)}

b. {(−4,−−1,−,,,10)}

c. {(−8,−−6,−−4,−−2,−−1,−4)}

d. {(−6,−3,−,,−,3)}

What is the average rate of change for this function for the interval from x=2 to x=4 ?

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12

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?