A construction crew built 9 3/4 miles of road in 3 3/8 days. What is the unit rate in miles per day?

Write your answer as a fraction or a mixed number in simplest form.

2x^2+5x+17

your welcome. : )

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.