Explanation for Question 15 From the Math (Calc) Section on the 2018 May Sat
Question 15 says the linear model Z is equal to four, 2 over three w can be used to find the height in feet of a 3 giant Sequoia tree. What does w represent? 4 So in this equation, since we know that it's finding the height, 5 that means that Z is the height. The height of the tree four 6 over three represents the increase in the height 7 every year that the tree ages and w represents how much 8 the tree is aging. So just age. 9 So the question's asking us, what does w represent? 10 Well, we know that that represents the trees age because it's being multiplied by 11 the increase in height. So that means that the correct answer is answer choice.