The additive inverse of 4x is -4x because if you add them together, you get zero. 4x+-4x=0.
500 times, to transfer 25,000 people. Let me know if this helped.
50%
The problem is just asking for the nfc so 8 animal and 8 non-animal equal 16 all together and the animal is 50%
The answer is (x + 1) + 3/(x^2-9)