Which of the following expressions is equivalent to -10?

3-7

-7 + 3

7 - 3

-3 - 7

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.

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

30 points if you answer all 3 questions with work!