Tavon has a gift card for $170 that loses $1 for each 30 day period it is not used. He has another gift card for $150 that loses $3.50 for each 30 day period it is not used
a. Write and solve an equation for the number of 30 day periods until the value of the gift cards will be equal

the answer is here: : )

:

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.  

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90

27 +27 or 27times 2=54

the diffrence is 0