Solve the equation for x and enter your answer in the box below.
x/5=13

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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.