The data shown are the final exam scores of 10 randomly selected math students and the number of hours they studied for the exam. the equation of the line of best fit for this data is a) y = 56.11x - 5.044 b) y = 5.044x + 56.11 c) y = -56.11x - 5.044 d) y = 5.044x + 5.044

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?