Agroup of 15 people wants to form a committee consisting of a chair, vice chair, and three additional members. how many different committees can be formed?

do i use a permutation for the officers and a combination for the committees?

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.

Ineed here’s a picture of the question

When you flip a biased coin the probability of getting a tail is 0.6. how many times would you expect to get tails if you flip the coin 320 times?