Question

a school administrator who was concerned about grade inflation looked over the number of straight - a students from year to year. straight - a students according to the graph, when was the rate of decrease greater? between 2017 and 2018 between 2014 and 2016

Explanation:

Step1: Calculate decrease between 2014 - 2016

Number of students in 2014 is 68, in 2016 is 63. Decrease = 68 - 63 = 5. Years passed = 2. Rate of decrease = $\frac{5}{2}= 2.5$ students per year.

Step2: Calculate decrease between 2017 - 2018

Number of students in 2017 is 72, in 2018 is 67. Decrease = 72 - 67 = 5. Years passed = 1. Rate of decrease = $\frac{5}{1}=5$ students per year.

Step3: Compare rates

Since 5 > 2.5, the rate of decrease is greater between 2017 and 2018.

Answer:

between 2017 and 2018