You first have to distribute the negative to the second pair of parenthesis. So the new equation would be 2n-4-4n+3. Next you combine like terms. So your final answer is -2n-1.
16. It's basically the problem you started with, but just reversed.
K is not a collinear point
That would be choice 2. One acute angle is the complement of the other
eg in a 90-60-30 triangle sine 30 = cos 60
Answer:
K (2,-4)
L (4,-6)
J (2,-9)
Step-by-step explanation: