Help plzzz ill give extra points dawg

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle