Explanation for Question 17 From the Math (Calc) Section on the 2019 March Sat
Question 17 says the figure above shows a graph is six regions that 2 correspond to temperature in degrees, 3 Fahrenheit, and humidity conditions in grams of water vapor, 4 per cubic meter of air that will result in different snow crystal shapes. 5 When the crystals are grown in a laboratory, based on the graph, 6 which of the following is a combination of temperature and humidity at which prisons 7 will be formed. So to find the answer, 8 all we have to do is find the area where prisons are formed, 9 which is right here on the graph. 10 And now we need to go through each answer choice, 11 graph it and see if it falls within that area. 12 So starting with a five zero point 15, 13 well, that's going to be about here on the graph so that 14 doesn't fall in the right area and a is incorrect for 15 B the data point is 15 zero point 18. 16 And that falls about here also not within 17 the area where prisons are formed. So B is incorrect. 18 C is at the data point 20 0.02. 19 And that would be about here. 20 And now that does fall within the area where prisons are formed. 21 So we know that this is a temperature and humidity level where prisons are 22 formed and see is the correct answer.