The temperature in a greenhouse should be 67 degrees or higher. one morning, the heater stopped working. the temperature dropped 6 degrees before someone fixed the heater. the temperature was still at least 67 degrees when the heater started working again. how can you best describe the temperature in the greenhouse before the heater stopped working?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

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.

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3