Valley Savings and Trust pays 5% interest compounded quarterly on regular savings accounts . Leland Davis deposited $2,000 in a regular savings account. He made no other deposits or withdrawals during the interest period . a. What is the amount in the account after years? b. How much interest did his money earn? c. What is the amount in the account if the money is left on deposit for 6 more months ? d. How much interest did his money earn ?

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

i honestly dont know

8(4)^8=72^feet to say that the total can conclude to 8(4) which as you know would mean 8 x 4. that equals 32w. 32^ could make a 72 answer as well. but your coefficent will remain w so your answer is 72w.

you!

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