What is the y-intercept of the line y + 11 = –2(x + 1.5)?

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.

If you answer 2+2 you will get over 80 points

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4