PLEASE HELP!

AND SHOW WORK PLEASE

a.480 feet

b.$96 because you would have to divide and I knew where to place the decimal because since it's money, that's where it would go.

c. I don't know what the expression is but the answer is 2500 yards.

Step-by-step explanation:

a.64 x 2.5=160y = 480f

ratio-1y=3f

b.480 divided by 0.20

c.1000 x 2.5

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.