The distance on the number line from a to 7 is 0.5. Which of the following could be the value of a?

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

If you answer right ill give brainliest, : )