Answer:
To order the battery levels from least charged to greatest charged, we need to convert all the values to a common format. We will convert all fractions to decimals and percentages to decimals by dividing by 100.
Phone 1: 1/4 = 0.25
Phone 2: 0.35
Phone 3: 0.21
Phone 4: 22% = 0.22
Phone 5: 3/8 = 0.375
Now we can order the battery levels from least charged to greatest charged:
Phone 3: 0.21
Phone 1: 0.25
Phone 4: 0.22
Phone 2: 0.35
Phone 5: 0.375
Therefore, the order of the battery levels from least charged to greatest charged is Phone 3, Phone 1, Phone 4, Phone 2, and Phone 5.