Answer what? This question? Oh, I'm answering it right now. Did you have another question out? Well, I can't see it.
3+5+7 = 15 total marbles
3 are red
so she has a 3/15 reduces to 1/5 probability of picking a red one
$12.48/6= $2.08
$14.42/7= $2.06
$10.35/5= $2.07
So you are looking for the best deal.
The best deal would be:
B.) 7 bottles for $10.35
Hope that helps!!
Have a wonderful day!!
x-axis is y=0, so the answer is D.
but not D. Luffy