Please help please

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

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

3x + 4y = 5 x- 3y = -7 solve by substitution