Answer:
8-12a
Step-by-step explanation:
Sorry, the given solution is not valid, and unfortunately external links are not allowed, so it will be deleted.
I do not think that it is possible to visit every cell without revisiting any to go from one corner to the opposite one.
Answer:
D.
Step-by-step explanation:
Two events A and B are independent when

where
is the probability that event A occurs given that event B has occured.
A = randomly selected person is from California
B = randomly selected person preferred brand A
A|B = being a person from California and preferring brand A.
Hence,

Since
events are independent.
Answer B
Or in other words helicopter descends 2000ft every 5 minutes.