The tank is filled up at a total rate of 10 gal/min, and currently contains 500 gal of solution. It can hold up to 1000 gal, so it will take time <em>t</em> to fill it up completely:
500 gal = (10 gal/min) <em>t</em>
<em>t</em> = (500 gal) / (10 gal/min)
<em>t</em> = 50 min
In that time,
(8 gal/min) (50 min) = 400 gal of cola
and
(2 gal/min) (50 min) = 100 gal of cherry syrup
are added to the tank, so that when it's full, the tank contains 850 gal of cola and 150 gal of syrup.
So 150 gal of the total 1000 gal of solution is cherry syrup, or (150 gal)/(1000 gal) = 15/100 = 15% of the mixture.
Answer: D
Step-by-step explanation:
18 more than 6 in a mathematical expression will be 18 + 6 or 6 + 18. Because we are adding 6 to 18 or 18 to 6.
Anyway
so the recursive rule tells the relationship between the previous term and the term we want to find
given
an=2n+11
it is clear that the first term is 13
2nd term is 15
3rd term is 17
each term increases by 2
so
a term is equal to the previous term plus 2
an=a(n-1)+2
the first one is the answer
