I need help with percentages ASAP! Will medal!

Question

anonymous · Answer

A $6,300.00 principal earns 6% interest, compounded annually. After 3 years, what is the balance in the account?
a.	$1,360,800.00
b.	$7,503.40
c.	$7,434.00
d.	$25,804.80

A $6,000.00 principal earns 8% interest, compounded semiannually twice a year. After 35 years, what is the balance in the account?
a.	$22,800.00
b.	$39,600.00
c.	$88,712.07
d.	$93,429.71
A boat costs $92,000.00 and deprecates in value by 15% per year. How much will the boat be worth after 10 years?
a.	$18,112.45
b.	$78,200.00
c.	$18,941.98
d.	$69,000.00

(Step by step help. Teach me how to do this like you're teaching a 10 year old) An investment account earns 4% per year compounded annually. If the initial investment was $4,000.00, how much is in the account after 3 years? Round your answer to the nearest dollar.

anonymous · Answer

like a ten year old?

anonymous · Answer

for the first one, to  increase a number by $6\%$ multiply it by $100\%+6\%=106\%=1.06$

anonymous · Answer

to do it 3 times in succession, multiply it by $(1.06)^3$

anonymous · Answer

Yes, I need it explained like you're explaining it to a ten year old. Explaining it with the words of algebra 1 makes it hard to understand, so if its told to me with out the algebra language, I'll get it.