The answer would be A.
It is reflected across the x-axis means that point E' will be at (-3, -2) and point F' would be at (-1,-2)
the length of the line would be the same regardless of anyway you translate, rotate, or reflect it. Only if you dilate it, then an object's size can change.
Hope that helps :)
You cant simplify seven tenths
Answer:
x+3
Step-by-step explanation:
21=7x3. Hence answer is 3
Q1
Answer:

Step-by-step explanation:

explanation for second step:
you divide each side by 3 to get rid of the '3' in '3x'