How much more interest will maria receive if she invests 1000$ for one year at x % annual interest, compounded semianually, than if she invest 1000$ for one year at x percent annual interest, compounded annually?
a. 5x
b. 10x
c. x^2/20x220
d. x^2/40
e. (10x+x^2/40)

D.

Step-by-step explanation:

Compound interest formula is:

When compounded annually;

=>   ....(1)

When compounded semi annually means rate = x/2 and n = 2.

=>   .... (2)

Now, subtracting 1 from 2 we get ;

=

Hence, option D is correct.

other answer is correct. i had used the radius of the radius somehow. a website:

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey