Explanation for Question 14 From the Math (No Calc) Section on the 2018 April Sat
Question 14 says the equation above can be used to model the population 2 in thousands of a certain city tiers. 3 After 2000, according to the model, 4 the population is predicted to increase by 0.5% every N 5 months. What is the value of N so you can see from this 6 equation here, that the initial value of, 7 uh, the population is 215,000, 8 and that increases by 0.5%. 9 Whenever T over three is equal to one. 10 So when T over three is equal to one, 11 then the population increases by 0.5%. 12 So all we have to do here is now solve for T so multiply 13 both sides by three, and you get T is equal to three, 14 but T represents the number of years. 15 So if we want to find the number of months, 16 it takes for the population to increase by 0.5%. 17 Then we need to multiply three by 12. 18 And that gives us our answer 36 or answer choice 19 D.