Can anybody help me with this?

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

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.