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Genişletilmiş biçimde 3.52 nedir

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?