22. tristan spends 20 minutes walking 1.2 wes
from his home to the library. he stays there for
10 minutes, and then he spends 30 minutes
walking 1.3 miles to the park. after watching
the ducks there for 15 minutes, he leaves and
walks 2.5 miles back to his home in 45
minutes.
draw the graph of a function that could
represent the situation.
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x

add an image

step-by-step explanation:

hello i am doing good for you that it's summer in your country or state ; )

btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )

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.