Answer:
The area of the two-dimensional cross section is 
Step-by-step explanation:
we know that
The two-dimensional cross section that is parallel to face ABC is a triangle congruent with the triangle ABC
Therefore
Calculate the area of triangle ABC

we have that
Triangles ABC and DEF are congruent
so


substitute

Answer: he had 5 pounds.
Step-by-step explanation:
ez
I think the answer is letter c
the y-intercept would be -11 because slope-intercept formula is always like this; y = mx+b. b is y-intercept and m is slope. so therefore, it would be -11