exam Maths Puzzle Numerical Ability

3x-2y=4
2x-5y=21

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exam Other Question

The total height of a building and the flagpole on the roof is 208 feet.The building is 7 times as tall as the flagpole.How tall is the building? I need help with this question and I have no clue how to even attempt it: graph the function f(x)=(x+3)^3+4. Can somebody help me?