I would say the answer is c. only graph d ,, think of the line test to see if a graph is a function or not
Assuming you want to choose 4 people from the class of 20;
Begin by using the combinations formula;
20C4=4845 possibilities
Hope I helped :)
I believe the answer is 18,295.2 tons of fertilizer.
Answer:
The yellow polygon is the scaled version of the red one (scaled by 3×), so the variable w = 9
