720 divided by 8 and then look up the answer to that as a fraction on Google
1. The amount will remain the same because 1/8*8/1*x=1x
2. 15*5280/3600=ft per second
First factor the equation
(x-10)(x+2) = 0
Then solve for (x-10) and (x+2)
x=10
x=-2
Let the temperature at 10am be x, then
x + 8 = 56
x = 56 - 8 = 48 degrees F
Let y be the temperature at 8am, then
y - 2 = 48
y = 48 + 2 = 50 degrees.
This is how it would look like, hope that this is not too late to help you yet!
Have a great day!