After a 20% discount, Eduardo paid $140 for a skateboard. What was the price before the discount? How do you know your answer is correct?

$175

Step-by-step explanation:

If after a 20% discount, it cost $140, the $140 is only 80% of the cost.

So divide 140 by 4 then multiply the answer by 5 to get it back to 100%

140/4=35

35x5=175

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.  

according to egenuity the answer is

step-by-step explanation:

d. 344.22