The scatter plot shows the average heights of children up to age 5

What is this inequality notation? t is less then or equal to 2

Reading tests are compared for two students. sara got 98, 100, 65, 78, 98, 46, 100, 100, 45, and 50 on her reading test. lee got 97, 67, 89, 99, 100, 45, 79, 89, 58, and 67 on his reading test.

In his stamp album ,jamal has 48 new stamps and 72 used stamps. which ratio can be represented by 3/5