Answer:

Step-by-step explanation:
the quadratic function should be as follows:

Now let's confirm that the zeros of the function are 0 and 8

Therefore we can see that if x = 0

the equation is fulfilled
And we also have 
for this expresion to be equal to zero:

thus, if x = 8

the equation is also fulfilled
The zeros of the quadratic function
are 0 and 8.
If I remember correctly perpendicular means right angle so I do not think it could be reversed.
The answer is 140
140 x 0.1 (10% as a decimal) = 14
Answer:
15=24
20=x
cross multiply
15x=24*20
15x=480
divide both sides by 15
x=480/15
x=32
it will take her 32 minutes