Jim is opening an interest-accruing checking account which compounds interest monthly. The amount in the account, in dollars, after t years is shown by the following function.

Which statement below best describes the exponent, 12t?
A.
the amount of the yearly earnings

B.
the number of times the account has compounded since it was opened

C.
the amount of the initial deposit

b

Step-by-step explanation:

215.92 dollars is the 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.