Consider a discrete-time LTI system with impulse response given by h[n] = [n + 1] 2[n] + [n 1] where [n] is the unit impulse (or unit sample) function. (a) Is this system causal? (b) Is this system stable? (c) Find and sketch the step response of this system|i. e., the output when the input is a unit step.

Someone answer this asap for the function f(x) and g(x) are both quadratic functions. f(x) = x² + 2x + 5 g(x) = x² + 2x - 1 which statement best describes the graph of g(x) compared to the graph of f(x)? a. the graph of g(x) is the graph of f(x) shifted down 1 units. b. the graph of g(x) is the graph of f(x) shifted down 6 units. c. the graph of g(x) is the graph of f(x) shifted to the right 1 unit. d. the graph of g(x) is the graph of f(x) shifted tothe right 6 units.