What is the factorization of the polynomial below? -x^2-13x-40

First take the negative sign out to get -(x^2+13x+40)

Which two numbers add to be 13 and multiply to be 40? If you give it some thought, you'll see that 8 and 5 satisfy these requirements. Then factor it. 

Your answer should be: -(x+5)(x+8)

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.