The mean age of 5 people in a room is 37 years. A person enters the room.
The mean age is now 34.
What is the age of the person who entered the room?

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.

Which value of y will make the inequality y< -1 false?

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.