Answer:To arrange the numbers from least to greatest, we compare the numerical values of each number. Let's consider the numbers -7/16, 9, and -23/80.
First, let's convert the fractions to decimals to make the comparison easier.
-7/16 is approximately equal to -0.4375.
-23/80 is approximately equal to -0.2875.
Now, let's compare these values with the whole number, 9.
-0.4375 < 9 < -0.2875
Therefore, when arranging the numbers from least to greatest, the order would be:
-7/16, -23/80, 9
Explanation: