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Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

What is the relationship between all triangles that can be drawn given the same three angles