Answer:
A. -5
Step-by-step explanation:
-9 + 4 = -5
hope this helps
Answer:

Step-by-step explanation:
Use formulas for the volumes:

1. When r=1,

2. When r=2,

3. When r=3,

4. When r=4,

5. When r=5,

Note that for all r,

Answer: He can take 6 friends.
Step-by-step explanation:4,000 divided by 637 is 6.29. There can not be part of a person so we round down to 6.
Answer:

Step-by-step explanation:
Let
x -----> the number of ice cream
we know that

Solve for x
Divide by 5 both sides


therefore
The maximum number of ice cream is 6