The function n(d)=4•3^d-1 represents the number of people who receive a newspaper on day d of a delivery schedule. What does the value 3 represent in this situation?

1. Three people received a newspaper on the first day in the schedule

2. There are 3 people making deliveries

3. Deliveries were made for 3 days

4. The number of people receiving a newspaper on a given day is 3 times what it was the previous day

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.

this is a good question! i'll do some research and come back when i have the answer!

5.762159

step-by-step explanation:

it would be 9 because when it is the nine is over five so that would mean it rounds up to 90 or 9