When converting from a whole number to a prefixed number, ? the whole number by the value of the ?

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?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?