The formula for perimeter of a rectangle is p=2l+2w where l is the length and w is the width. a rectangle has a perimeter of 24 inches. find its dimensions if its length is 4 inches greater than its width.

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.

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?