Need pretty fast.
harrison and sherrie are making decisions about their bank accounts. harrison wants to deposit $200 as a principle amount, with an interest of 2% compounded quarterly. sherrie wants to deposit $200 as the principle amount, with an interest of 4% compounded monthly. explain which method results in more money after 2 years. show all work.

2% compounded quarterly is .5% each quarter  (2% ÷ 4) 
So the principal (200) is multiplied by  1.005 ⁸  (8 because there are 8 quarters in 2 years)

200 x 1.005 ⁸ = $208.14 in 2 years (rounded to the nearest penny)

4% over 12 months is 1/3% every month  or .003333
200 x 1.00333²⁴  (24th power since there are 24 months in 2 years) $216.61 in 2 years rounded to the nearest penny.
The monthly scenario is better.

What the heck don’t understand