On the 4th stage, 81 friends will be called to be told of the news
Answer:
23
Step-by-step explanation:
2+2+3+4+5+6 = 23
Answer: i think is A or B
Step-by-step explanation:

Answer:
y = 
Step-by-step explanation:
Given
x(y + 2) = 3x + y ← distribute parenthesis on left side
xy + 2x = 3x + y ( subtract 2x from both sides )
xy = x + y ( subtract y from both sides )
xy - y = x ← factor out y from each term on the left side )
y(x - 1) = x ← divide both sides by (x - 1)
y = 