Answer:

Step-by-step explanation:
Hello!
To find the slope of a line we divide how many times it goes over by the number of times it goes up
The line goes over 4 and up 2 which is shown like

We can simplify this

The answer is 
Hope this helps!
Answer: REACTANGLE !!!!!!!!!!!
Step-by-step explanation:
The shape of the cross-section is a rectangle. The plane is perpendicular to the base of the rectangular prism so the shape of the cross-section is the same as the top and bottom views of the rectangular prism.
I got this on the calculator.
Answer:
12.39
Step-by-step explanation:
18% 10.50 = 1.89
10.50+1.89 = 12.39