Which set of ordered pairs does not represent a function? O {(7,5), (-6,0), (8,-9),(-1,-9)}
O {(0,–2), (3,9), (-5, -1),(-9,9)}
O{(-5,-4), (1, -1), (2,5), (3,5)}
O{(-9,9), (-6,0), (-9,8), (-1,-2)}

4

Step-by-step explanation:

Functions can not have two x-values. Number 4 has two -9's, therefore it is not a funtion.

the answer is b.6

step-by-step explanation:

the answer is option a you would get more money.it would be $250.

step-by-step explanation:

for option b 200/2=100=50% 100/2=50=25% 50/5=10=5% it would be $220