The answer I believe is the third choice.
3, -2, -7, -12
These all fit into f(n)-5=f(n+1)
Answer:
acute triangle
because you have 2 tall sides and 1 short
6x-6=8x
subtract 6x from both sides
-6=2x
divide both sides by 2
x= -3
Val covers greater distance because 2 3/5 x 4 = 10 2/5. Bill only ran 10 miles so Val covered 2/5 more miles than him.
