Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. match the systems of equations with their solution sets. y + 12 = x2 + x x + y = 3 y ? 15 = x2 + 4x x ? y = 1 y + 5 = x2 ? 3x 2x + y = 1 y ? 6 = x2 ? 3x x + 2y = 2 y ? 17 = x2 ? 9x -x + y = 1 y ? 15 = -x2 + 4x x + y = 1 solution set linear-quadratic system of equations {(-2, 3), (7, -6)} arrowright {(-5, 8), (3, 0)} arrowright {(-2, 5), (3, -5)} arrowright {(2, 3), (8, 9)} arrowright

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.