Aroad sign is in the shape of a regular pentagon. what is the measure of each angle on the sign? round to the nearest tenth

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2