Aisha just received a paycheck from her new job she spends some of it buying music online and saves the rest in a bank account her savings is given by y=50-1.99x where x is the number of songs she downloads at $1.99 per song write the equation in function notation

b) 36

step-by-step explanation:

18 times 2 is 36

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.