Two consecutive intergers sum to 33

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

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.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²