Answer:
Vertical
Step-by-step explanation:
/_
Answer:
and 
Step-by-step explanation:
Think about it.
What two numbers multiply to -15 and add up to 2?
The answers are 5 and -3.
So plug that into the factored form of a parabola.

To find the x-intercepts, plug in 0 for
.

Since we are multiplying, at least one of the terms has to equal 0.

So the x-intercepts are
and
.
Answer:
8 centimeters.
Step-by-step explanation:

Divide 3 both sides:

Multiply 4 on both sides:

8cm on the map represents 20km.
100 would be correct because the 9 in the hundredths place rounds to a ten, and so does every other number.