Volume of 3D triangle

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 completely 8y+48

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83