What is wrong with the equation? What would be the answer? Plz help, i need to answer the problem soon

Factor the polynomial. b^2 + 4b + 4

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish