John had 84 dollars, and his brother fred owed 12 dollars to his friend. john gave his brother some money. fred paid his debt and now both of them has the same amount left. how much money did john give fred? pl !

Consider the function f(x)=-5x+3 what is f(-2)

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

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