Ten years ago, you purchased a $70,000, 5-year term life insurance policy. At that time you were 30 years old. a. What is your annual premium?
b. How much have you paid in the last 10 years?

a. 14,000

b. 140,000

Step-by-step explanation:

2nd one in the first row is correct

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.