I think the correct answer from the choices listed above is the second option. Combining probabilities is a function of mutually exclusive events. Joint probability<span> is a measure of two events happening at the same time, and can only be applied to situations where more than one observation can be occurred at the same time.</span>
Your best answer is C.
Round up 19 bags they ordered to 20, then multiply by 12 to get 240 apples they ordered.
Round down the 42 to 40. 40 x 8 = 320 apples sold.
200 to start + 240 ordered = 440 apples
440-320 = 120
The question in the problem wants to calculate the identity for cos(4t) in terms of cos(t) and base on the given and further computation, I would say that the answer would be 2cos^2(2t)-1. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
Divide by -1 to cancel the negative signs
