Answer:
Option A is correct that is 
Step-by-step explanation:
We have been given a formula 

We will put values of n in
when n=2 we get
when n=3
Therefore, Option A is correct that is 
Answer:
18 ways
Step-by-step explanation:
The computation of the number of ways that could be choose your dinner as follows:
= 3 meat choices × 3 vegetable choices × 2 desserts
= 18 ways
By multiplying all the three things we can determined the number of ways
Answer:
70
Step-by-step explanation:
cows:sheep=6:5
sheep:pigs=2:1
cows:sheep:pigs=12:10:5
27x=189
x=7
sheep=10*7
sheep=70
Can’t do it need more information