Pls help, I’m stuck on this

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Solve for x. −3/4(x+2)=6 enter your answer in the box

The lengths of two sides of a triangle are 9 and 15. what can be said about the length of the third side? a. it must be greater than or equal to 6 and less than 24. b. it must be greater than or equal to 6 and at most 24. c. it must be greater than 6 and less than 24. d. it must be greater than 6 and at most 24.