-3x+3y=4 -x + y = 3 solve using elimination

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 value of x in the following equation. -x ^3/2 = -27

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class