Answer:
h = 9 ft
Step-by-step explanation:
Assume the diagram is like the one below.
∆ABD is a right triangle.
We can use Pythagoras' Theorem to find the height h.

It’s blurry I can barely see it.
Answer:
C
Step-by-step explanation:
Let's use the formula!
6/-4 - -2/-4 = 8/0.
Since this is divided by 0, this means that it is undefined.
So C
A basic algebraic linear equation is just a fancy way of saying "equation of a line". They are most likely referring to the formula y=mx+b, where m is the slope and b in the y intercept. :)
I'm pretty sure the answer is education