Because the tell if he number is big or small
Answer:
f(x) = (x-2) (x+10)
Step-by-step explanation:
f(x)=x^2+8x-20
Factor the right hand side
What 2 numbers multiply to -20 and add to 8
-2 * 10 = -20
-2 + 10 = 8
f(x) = (x-2) (x+10)
Then we can use the zero product property to help us to find the zero's
Solution: 7.5 Degrees per hour
Reasoning: 15/2 is equal to 7 1/2 or 7.5
(10*16)/2
160/2=80
The area is 80.
