Ineed all but if someone could just do the first, it would a lot

So, the equation I got was y = -7x -15.

Firstm you gotta find the slope using the slope formula, m = (y2-y1) / (x2-x1) (plug in the two initial points you were given, (7,-2) and (8,5). After you get the slope, which I got as -7, plug that into the y=mx+b formula with your last point (-3,6)
So, 6= -7(-3) + b -7 = m, -3 = x, 6 = y. after you solve the equation you should get -15. plug that into the y=mx+b formula andyou have your final equation,
y = -7x -15. to check if all of the point are on this equation, I'd recommend plugging the equation into the demos graphing calculator, it really helps. Hopefully this helped you!

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

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.