Please help

Will put brainliest to who answers in the first 10 - 20 mins

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

If cos(θ)=2853 with θin q iv, what is sin(θ)?

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.