Juan deposited $200 in a savings account earning 3% interest over 2 years.

what was the total amount of interest earned at the end of 2 years?

a.
$240

b.
$24

c.
$120

d.
$12

Given:  
Principal Deposit = $ 200
Interest Rate per annually = 3% 
Term = 2 years 

Formula: 
I=PRT 

I = $ 200 x 3% x 2
I = $ 200 x 0.03 x 2 
I = $ 200 x 0.06
I = $ 12 

The answer is 26 to 1

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.