 In this video we provide the solution to question number two for the practice exam number one for math 1050 We're given the quadratic function f of x equals x squared plus 3x plus 4 and we're asked to evaluate the Evaluate the expression f of negative 1 what this means is we're going to plug in negative 1 for x So we have to do so for each of these variables in the expression right there So f of negative 1 looks like negative 1 squared plus 3 times negative 1 plus 4 Do check your order of operations here negative 1 squared means negative 1 times negative 1 That's a positive 1 3 times negative 1 is a negative 3 plus 4 here And so we get 1 minus 3 which is negative 2 plus 4 We see that the response would be positive 2 and hence the correct answer is b