Answer:
D
Step-by-step explanation:
Since the order does not matter, then it is a combination question,
So you just use the combination technique,
10C3 = 10!/(10!(10-3)!) = 120 ways
4 / 40 = 18 / x.....4 min to 40 gall = 18 min to x gall
cross multiply
(4)(x) = (40)(18)
4x = 720
x = 720/4
x = 180 gallons <==
So Chase has $27.34.
You add $27.34 to $9.83. (Which is $37.17).
That will give you the amount of how much Sydney has.
To find how much Ally has you times $37.17 by 4.
Basically, you are doing $37.17 + $37.17 + $37.17 + $37.17.
When you have finished adding them you will get the answer.
So the answer is $148.68
Answer:
axis of symmetry is x = 1; vertex is (1,8)