The formula for compounded interest is A = P (1+r/n)^nt.
P=580
r = .09
n = 1
t = 9
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To find how much the balance is at the end of nine years, plug in all of the knows into the formula.</span>
A = 1259.698 is how much the balance will be. (Rounded to 1259.70 if you round to the nearest cent).
A = b+5
ab = 3300
(b+5)b = 3300
b² +5b -3300 = 0 (quadratic formula)
b=55
a=60 (by first relation)
Greetings!Simplify both sides of the equation.


Both sides of the equation are not equal.
Hope this helps.
-Benjamin
x^3 - 3x^2 - 18x
Using the FOIL method, I arrived at my solution!