Which of the following formulas is used to calculate the probability of independent events a and b?
a. p(a ∪ b)=p(a)+p(b)
b. p(a ∪ b)=p(a)·p(b)
c. p(a and b)=p(a)+p(b)
d. p(a and b)=p(a)·p(b)

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"