The greatest number of adults who can chaperone
35-20 = 15
Step-by-step explanation:
Use Multiplication Principle with states that if a event can occur n ways, and another mutually exclusive event occur p ways, then the total outcome is

The possible ways of rolling a dice is 6 and the possible ways of flipping a coin is 2 so we have

Now, we use the fact that proabliblity is
Number of favorable outcomes/ Total outcomes.
We can only get a head and a 5 once out of the set so the number of favorable outcomes is 1. Total outcomes is 12 so we have

A is the answer.
Answer:
X+y=30
X=30-y
Z=yx
Z=y(30-y)
D/dy
z=30–2y
At max 30–2y=0
2y=30 Y=15
Therefore x=15
Step-by-step explanation:

so... you tells us, which filling rate is the bigger and thus faster one?
Plan 1 because she spends 435.88 more if she goes with plan 2