Answer:
152 Chairs
Explanation:
7 rows of 23 chairs: 7 · 23
7 · 23 = 161
Remove 9
161 - 9 = 152
Answer: 
Step-by-step explanation:

Begin by multiplying parentheses.



Subtract 


Add 3


Combine like terms;

Divide by 10

Simplify;

Answer:
462 pounds
Step-by-step explanation:
weighs 42 pounds
and the water 11 times more
so, 42*11 = 462 pounds
Answer:
D, 45
Step-by-step explanation: