What is the lowest point on a graph called

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

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.

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6