Which of those sequences is a geometric sequence

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?

Find the cosine function that is represented in the graph.

Which value would be a solution for x in the inequality 47-4x< 7