Suppose your friends parents invest $10,000 in an account paying 5% compounded annually. what will the balance be after 5 years?

2500 because 5% of $10,000 is 500, therefore you have to multiply that by 5 because there are 5 years. The answer is $2,500 
Hope this helped! 
~melany~ ;)

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm