Answer: C
I can’t explain it very well, but the answer is C
Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
Answer:
We have that 
Step-by-step explanation:
We have just to replace n=10 on the general equation

Therefore:

X intercept is 12
Y intercept is 9.
To find answer just cover up the one you don't want.
For x it would be -3x=-36
For y it would be 4y=-36
Answer:
Hey there!
For the first question we use the triangle area formula: 1/2bh, or 1/2(8)(5). This gives us 20 for the area.
For the second question we get a trapezoid, since the cross section does not pass through the vertex.
Hope this helps :)