which expression represents the total cost for air to rent a bike for b hours and for meg to rent a scooter for s hours

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

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.

In a column proof the right column states your reasons