What are the solutions to the equation f(x)=g(x)?

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?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16