Answer:
$0.65
Step-by-step explanation:
2.40-1.10=1.3
1.3/2=.65
Answer:
4 + 12 + 36 + ...
Step-by-step explanation:
4, 12, 36, ... is a geometric sequence, it has a common ratio of 
When we add the terms of a geometric sequence we get a geometric series.
4+12+36+ ... is a geometric series, it has a common ratio of 
4 + 12 + 20 + ... is not a geometric series because it has no common ratio

The second choice is correct
Answer:
300 books
Step-by-step explanation:
10 x 6 = 1 min
50 x 6 = 300
The answer is 12 because you have to subtract
32-20