The table shows the number of miles that Dave, Raul, and Sinead drove on their last trips, as well as the time took for each drive. Whose speed was the slowest? Justify your answer Dave 15miles 20 minutes

Raul 15miles 15 minutes

Sinead 20 miles 30 minutes

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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.

the answer would be 44.79

plz mark brainliest

step-by-step explanation: