Can u help me find the E ?

Find the value of the variable and the length of each secant segment

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

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%