The rate at which caffeine is eliminated from the blood stream is about 15% per hour. jim drinks a caffeine soda, and the caffeine in his bloodstream peaks at 30 milligrams. write an equation that will model this. A. y=30•0.15^x
B. y=30•1.15^x
C. y=30•0.85^x
D. y=30•15^x

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.  

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

first one because it can't have a fraction in it

step-by-step explanation:

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2