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Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

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?

It says factor each expression 49x-28?