Effective interest rate of $33,353 at 7% for 18 months?

Hence , the effective interest rate R = 0.0723 = 7.23 %

Step-by-step explanation :

Given as,

The Principal amount = $33,353

The stated interest rate (i) = 7% = 0.07

Number of compounding months (n) = 18

Now, The effective interest rate is calculated as ,

R = - 1

Or, R = ( - 1

Or, R = - 1

Or, R = 1.0723 - 1 = 0.0723

Hence , the effective interest rate R = 0.0723 = 7.23 %   Answer

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.