-3z - (-z -2) PLEASE HELP FASTTT

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

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?