In my opinion the ages for drinking/smoking should not be raised to 21. While I am not a fan of either and they almost never lead to good things, it just seems odd to me that a person can fight for his country at 18, but can't smoke or drink.
The answer is B 864 ft squared.
The correct answer is -1 and 1/2.
First, you need to divide 1/2 by -4/5. To do this, you multiply 1/2 by -5/4. You will get -10/8.
Then, you add -10/8 with -2/8 to get -12/8, or -1 and 1/2.
Answer: 1 2/3
Step-by-step explanation: 1/6 is 0.16666666 so 10x0.166666= one and two thirds