Bill drove 315 miles in 7 hours, alisha drove 235 miles in 5 hours, and joanne drove 414 miles in 9 hours. which person drove at an average speed of 47 miles per hour?

Alisha  is the person who drove at a average speed of 47 miles per hour

If you divide the miles by the hours on each amount of miles. you find that 235 divided by 5  is 47 therefore the answer is alisha

b is the answer that makes most sense

step-by-step explanation:

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.