An investment of $600 is made into an account that earns 6.5% annual simple interest for 15 years. Assuming no other deposits or withdrawals are made, what will be the balance in the account? (Remember, in dealing with money, you will need to round to the nearest hundredth if needed)

8121 because

130,000 divided by 16 is 8121

∈3,600

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb