Ok i give you free point answer this good luck ​

The graph of f(x), shown below, resembles the graph of g(x) = x2, but it has been changed somewhat. which of the following could be the equation of f(x)?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?