Add. Your answer should be an expanded polynomial in standard form.

(d2 +6d +9) + ( d3+ 6d + 9)

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.

What is not true about kl and mn? what is mn? (show your work)

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?