26% adults favor the use of unmanned drones by police agencies. twelve u. s. adults are randomly selected. find the probability that the number of us adults who favor the use of unmanned drones by police agencies is
(a) exactly three,
(b) at least four,
(c) less than eight.

p(3) =

(round to three decimal places as needed)

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

3/4 = c/36 i need with this fraction proble.

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.