Which of the following is equal to (3x/5-7)+7?
a. 5x/3
b. 3x/5
c. 3x-35/5
d. (3x-7)+35

For this case we have the following expression:

We can solve the problem by associative property for addition.

Applying the associative property we have:

Rewriting we have:

The equivalent expression is given by:

option B

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.  

ratio is 2 : 9

the answer is three

13.5 : 3