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The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer