Please please please help help I am being timed

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?

Solving algebraic equations 2m+3=11

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.