Which set of ordered pairs represents a function? {(9,8), (-1,7),(-1, –9), (3, -1)}
{(9,-5), (4,6), (9,8),(-6,9)}
{(-8,0), (-8,2), (5,–7), (-2, -9)}
{(2,9), (-4,-6), (9,6), (0,6)}

D

Step-by-step explanation:

An input value in a function can only have one output value.

It cannot be A, because input -1 has two outputs.

It cannot be B, because input 9 has two outputs.

It cannot be C, because input -8 has two outputs.

Therefore, it must be D.

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.