Could someone help me on how to do this Balanced model project? I don't quite understand on how to complete it.

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.