Ineed on this problem asapme on it

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 effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Choose the more precise measurement. 26.4 cm or 8.39 cm