A=5 4/7 or 5.57142857143
I cannot be simplified any more
-2/(a+b)
Explanation: you are dividing negative two by the sum of a and b so you would put a+b in parentheses as the denominator and then put -2 as the numerator
All the points touch with -2,-1,1,2 and 12
Its the first one. Beacuse she gains speed then slows down and stops but then starts up again then slows down. Hope this helps!
Answer:
both problems are proportional
