Find an inequality |x − b| < a or |x − b| > a for which the given interval is its solution set.
(−∞, 1) ∪ (15, ∞).

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

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.

Which of the following are parts of a sphere