Pls help me, I don’t understand

Which expression is equivalent to 3^3 + 2^2?

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons

If the discriminant if a quadratic equation is 4 which statement describes the roots?