30 choices for first seat
29 for 2nd
28 for 3rd
27 for 4th
answer is 30*29*28*27=657720 ways
When given a value of the variable, we replace each instance of the variable in the problem with that number. In this case, the expression becomes:

After this, we merely need to simplify the answer.


Simplifying 12/2 gives us the answer 6.
Answer:
a^2+b^2=c^2
Step-by-step explanation:
Answer:
x<-2 or x>6
written as x<-2;x>6
Step-by-step explanation: