Hello,
n=1,2,3,.... and not 0
Answer B a(n)=-2*n
2 and 3
Because 11/4 as a mixed number is 2 3/4 its closer to 3 and close to 2.
So it lies between 2 and 3
Find the unit rate of this scenario. 250/2 = 125 quarts per hour
Now multiply the unit rate by the new amount. 36*125 = 4500
Add the units
4,500 quarts in 36 hours.