PLEASE HELP and explain thank u GEOMETRY

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?

What is the 12th term of b(n)=-4-2(n-1)

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true