If you were to factor you would do what my teacher likes to call reverse foil so it would look like this (x-9)(x+4) so what you do is you brainsrorm to see what multiplies what to get that and 9*4=36 so that is how you factor -36 to find the -9
Hope this helps if I'm correct if not I will try to find the answer
75.6 ft^2
The surface area of a pyramid is always squared. Hope that helps
< because a negative is less than a positive
18 times
Since there only two numbers greater than 4 (5 & 6), you subtract 2 from 6.

Then, you divide that from 72.

So, the number of times I would expect the outcome to be greater than 4 is 18.