Explanation for Question 14 From the Math (No Calc) Section on the 2017 April Sat
Question 14 says the boiling point of water at sea level is 212 2 degrees Fahrenheit for every increase of 1000 feet above sea level. 3 The boiling point of water drops approximately 1.8, 4 four degrees Fahrenheit, which of the following equations gives the approximate boiling 5 point B in degrees, Fahrenheit at H feet above sea level. 6 So the first thing we know is that the original degree amount is 212 7 and that that's dropping, which means that our equation should start with 212 8 minus. So from that we can eliminate answer choices, 9 see an answer choice D next we know that 10 every eight feet above sea level or for every a thousand feet above sea 11 level, the boiling point of water drops approximately 1.8, 12 four degrees Fahrenheit, but we need to know how much it drops every one 13 foot above sea level, because we're multiplying it by age, 14 which only represents a single foot. So to do that, 15 we're going to take 1.84, and we're going to divide that by 1000. 16 And that gives us 0.00184. 17 That means that every one foot above sea level, 18 the boiling point drops 0.00184 degrees. 19 So that means in our equation, we can represent that as 0.00184 20 times H. And so we know that the correct answer 21 is answering.