Astrid bought a shirt that was 30% off the original price. the sale price was $28. what was the original price of
the shirt?

$40

Step-by-step explanation:

(1 - 0.30)x = 28

x = 28/(1 - 0.30)

x = 40

original price = $40

$40.00

Step-by-step explanation:

I just multiplied 0.30 by each of the listed choices, and subtracted the answer from the choice. I found out that 40 x 0.30 = 12. After that, I subtracted 12 from 40, and got 28! I KNOW THIS IS A LONGER WAY TO FIND THE ANSWER,SORRY!

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.