In 2010 a man mailed a $400 check to another man to repay a $400 debt of his great great grandfather who died in 1849. a bank estimated interest on the loan to be $454 million dollars for the 155 years it was due. find the interest rate the bank was using assuming the interest is compounded annually.

9.41%

Step-by-step explanation:

Data provided in the question:

Present value of the debt = $400

Interest = $454 million = $454,000,000

Time, n = 155 years

Now,

Future value = Present value of the debt  + Interest

or

Future value = $400 + $454,000,000

or

Future value = $454,000,400

Also,

Using the compounding formula,

Future value = Present value × ( 1 + r )ⁿ

here,

r is the interest rate

Thus,

$454,000,400 = $400 × ( 1 + r )¹⁵⁵

or

( 1 + r )¹⁵⁵ = $454,000,400 ÷ $400

( 1 + r )¹⁵⁵ = 1,135,001

or

1 + r = 1.0941

or

r = 1.0941 - 1

or

r = 0.0941

or

r = 0.0941 × 100% = 9.41%

f

step-by-step explanation:

f

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.