Um ok i need help pls give correct answers

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

Abcd is reflected across the x- axis, then rotated 90 clockwise about the orgin, and finally reflected across the line y= x to form a’ b’ c’ .