Answer:
1081
Step-by-step explanation:
First divide by 2, then you have
1/2x-7=-3
Then add 7 to both sides
1/2x=4
Then then divide by 1/2(which is the same as multiplying by 2)
And
x=8
Answer:

Step-by-step explanation:

The radical symbol when used for a square root means the non-negative square root. You cannot state that sqrt(x^2) = x because x may be negative. That is why you need use the absolute value symbol.
Answer:
C (5,3)
Step-by-step explanation:
I hope it is correct because I don't know if it is hope you also have a good day and pass this test