She is 3 years older than her brother and has (x+3) in the equation means that x is being used as her brothers age. (She is adding 3 to her brothers age)
The answer is Amy's brother's age.
Answer: look it up
Step-by-step explanation: Lollll
Answer:
-4 would be the answer i think!
Step-by-step explanation:
Answer:
7 girls can go in the first place, 6 in the second, etc.
7! ways is the number of ways to arrange the girls.
likewise the boys can be arranged in 7! ways
The total number of ways becomes 7! * 7!
7! * 7! = 25,401 600 ways
Answer:

Step-by-step explanation:
Taking the terms one at a time,


Adding the terms, you have;

Hope it helps!
I'm out!