A 4-person grievance committee is to be selected out of 2 departments, A and B with 15 and 22 people, respectively. In how many ways can the following committees be selected? Complete parts (A) through (E) below.

(A) 3 from A and 1 from B
(B) 2 from A and 2 from B
(C) all from A
(D) 4 people regardless of department
(E) At least 3 from department A

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

13.46

step-by-step explanation:

16.80 x .20 = 13.46