The matrix m is a square matrix of order 12 with all elements taking either 0 or 1, such that each row and column has exactly one element being 1. let ko be the minimum value of the positive integer k such that mk is the identity matrix. for all possible matrices m, give the maximum value of ko

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x