The answer is B. He is incorrect because he should have only 5 factors of 3.
Use the formula
n(n-1)/2
which is the total number of connections between n points
So,
4(3)/2 = 6
the answer is option C.
Hope this helps
7x+100+68.25 Let me know if you want me to explain it to you
The answer is C.7/3 pi ft lmk if you want more answers
Distance = 500 miles
Distance of automobile = 10r
r = 50
Distance = 10 x 50 = 500 miles