Acleaning crew can clean 5 offices in 6 hours. how many offices can they clran in 12 hours

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.

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?