20 POINTS PLEASE HELP IM GONNA FAIL ;( I ASKED THIS Q LIKE 5 times nobodys answering PLEASE HELP

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

What is the measure of angle x? answer

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2