Help! please tell me why.

A

Step-by-step explanation:

-7 x -5 is the max it could be and 1 x 2 is the smallest

D

Step-by-step explanation:

max value: -7 times -5 which is 35

min value: -7 times 2 which is 14

always take the two ends of the 2 range given and multiply them so in a way you will get 4 answers from the 4 answers, you'll just need to see which are the two "extreme" values

however if the ranges given are in positive numbers/ with neutral number you can do the same method or just use the min of each range times max of each range

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.  

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb