Answer:
D (-7,3)
Step-by-step explanation:
When we reflect across the x-axis, we negate the y-axis.
This means that; 
If the coordinates of vertex A are (-7, 3), then after a reflection in the x-axis, we obtain:

For a reflection in the y-axis, we negate the x-coordinate to get;

Therefore the coordinate of A' are (7,-3)
35 is a composite number. 35=5×7.
Answer:
Ok tell me what you need so I can help
Answer:
2x - 9
Step-by-step explanation:
7x - (9 + 5x) < distribute the - into the parentheses to get rid of them
7x - 9 - 5x < combine like terms
7x - 5x = 2x
-9 stays as it is as there are no other terms to combine it with
the answer is 2x - 9