Emily collects and trades rocks. She starts with 8x2 rocks, for some number x, and then buys 7x4. She then trades away x5, then gives away 9x, and finally sells another 5 rocks. Write an expression for the number of rocks Emily now has in standard form. A. −9x + 8x2 + 7x4 − 5 − x5 B. 8x2 − 5 + 7x4 − 9x − x5 C. −x5 + 7x4 + 8x2 − 9x − 5 D. −5 − 9x + 8x2 + 7x4 − x5

Find the length of cu, the triangles are similar.

() at a farm, animals are fed bales of hay and buckets of gain.each bale of hay is in the shape of a rectangular prism.the base side lengths 2 feet and 3 feet,and the height is 5 feet. each bucket of grain is a cylinder with diameter of 3 feet. the height of the bucket is 5 feet as the height of bale. a. which is larger in area, the rectangular base of the bale or the circular base of the bucket? explain how you know b. which is larger in volume, the bale or the bucket? explain how you know

The measure of an angle is 117°. what is the measure of a supplementary angle?