Answer:
7th term =1
Step-by-step explanation:
This is Geometric progression.

7th term =1
If the last digit in the fractional part of 18.84 is less than 5, then simply remove the last the digit of fractional part. Answer 18.8
Answer:
16 1/4 years
Step-by-step explanation:
Assuming interest is compounded annually, the account balance (A) after t years will be ...
A = P(1 +r)^t
3200 = 1700·1.0397^t
log(3200) = log(1700) +t·log(1.0397)
t = (log(3200) -log(1700))/log(1.0397) ≈ 16.247
The account will reach a balance of $3200 after about 16 1/4 years.
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Hey there!
This can be written as

This is in form of

, it can be expanded as
=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7
So option 7 , -7 are correct.
Hope this is clear :)
Have a good day:)
The value of Y would be -5 = 2y