of an The price item has been reduced The original price price was 480. What is the by 30%. price now pl help

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal

If -2x²+5-8 is by 4x-9, is of x in ? a) -77 b) -45 c) -32 d) -13

Need this is on my study guide and i got it wrong. explain how you get the answer . you! solve for x.