Answer:
Step-by-step explanation:
we know that
The compound interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have
substitute in the formula above and solve for P
9+3
= 12
9 +3 +
10
11
12
A. 40
Q1 - 40
Q2 - 65
Q3 - 80
And 90 is max
So 40 is the correct answer.
B trust me
answer is 13 plus 26 is equal to 39