The manager can do both but if he does 10 he will have 25 groups but if he does 5 he will have 50 groups so the simple way is 10 so he will have 25 groups
The amount he needs to pay is $ 28753.61.
Step-by-step explanation:
Given,
Principal (P) = $ 8000
Time (T) = 10 years
Rate of interest (R) = 13%
The payment will be quarterly so, n = 4
To find the amount of compound interest.
Formula
Amount = 
Now,
Putting the values of P, T, n and R we get,
Amount = 8000(
= 28753.61 (approx)
X=-9
Give specific name to solve it
Sqrt=13 is not possible apply phythagoren theorm
a^2+b^2=c^2
(√2)^2+(3)^3=11
or other way is (3)^2- (√2)^2=7