460 and 375 are the answer.
Answer: 4. A
5. C
6. B
Step-by-step explanation:
ANSWER

EXPLANATION
The sum of the first
terms of a geometric sequence is given by;

Where
, is the number of terms and
is the first term.
When
, we have
, we get;





Answer:
Step-by-step explanation:
7. 1/4 of 84 is 21, then 1/3 of that is 7