Construct a system of equations for the word problem do not solve a certain number is three more than five times another number the difference of the two numbers is 11

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

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.