Determine whether each number is an integer, a rational number that is not an integer, or an irrational number.

To decide if an integer is a rational number, we try to write it as a ratio of two integers. An easy way to do this is to write it as a fraction with denominator one. Since any integer can be written as the ratio of two integers, all integers are rational numbers.

Step-by-step explanation:

16

step-by-step explanation:

2 x 40 = 80

80/5

= 16

ratio is 2 : 9

the answer is three

13.5 : 3