What is the answer? Thank u

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil