Answer
-17,1.4,$\frac{8}{5}$, $10^{2}$
Work Step by Step
-17 is obviously the least because it is the only one less than 0.
In order to compare, we need to convert the fraction and the powered number into natural numbers or decimals.
We have 1.4, $\frac{8}{5}$=1.6, $10^{2}$=100
1.4 is less than 1.6 because 6 is greater than 4. Then 100 is greater than 1.6 because 100 is a three-digit number, but 1.6 is only a one-digit number.