A competing loan company, Loans R Us, states: ”You only pay 18 cents a day for each $200 borrowed.” You still plan on borrowing $1500 for 120 days. If you go with Loans R Us, what amount will you repay and what annual interest rate is being charged? (Use 360 for the total number of days in a year.)

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

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.