What is the measure of angle BDC

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

What additional information could be used to prove abc =mqr using sas? check all that apply.