© Greg created a plot of the number of songs he downloaded from an Internet music site and the total cost of those songs. He let x represent the
number of songs downloaded and y represent the total cost in dollars. He then plotted the points (6.7.5), (8, 10). (10, 12.5), and (12, 15) which
represent his four most recent purchases. What is the cost of downloading a song?

step-by-step explanation:

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.  

im pretty sure its

(8,15)

step-by-step explanation: