What is the simplest way to write 0.4 repeating as a fraction

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

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?

Abank gives 6.5% interest per year. what is the growth factor b in this situation?