B) two real roots is the answer because it is bigger than 0.
Answer:
The height of the building is 
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle ABC

we have

substitute and solve for BC


Find the height of the building
The height of the building (h) is equal to

Answer:
100 times
Step-by-step explanation:
3\div-2= \frac{-3}{2}3÷−2=2−3 direction of a line with the slope