Need this very badly

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?