Part 1:
Rational numbers have both demoninator and numerator as integers
Riley's withdrawals:
5.23 ---- -
10.22 --- -
7.89 ---- -
Riley's Deposits:
34.98 ----
51.02 ----
51.22 ----
Part 2:
Order the rational numbers:
a - -----Least
b -
c -
d-
e-
f- ---- Greatest
Reasoning: Above the rational numbers are ordered from least to the greatest and they are represented by alphabets from a to f
Lets take the first rational number a = and compare it with the 5 other rational numbers. If it is less than all 5 numbers than that means it is the smallest one, this process will be applied on all rational numbers until all are sorted out.
Part 3:
Balance at the beginning: $128
Total Deposits: 34.98 + 51.02 + 51.22 = $137.22
Total Withdrawals: 5.23 + 10.22 + 7.89 = $23.34
Balance at the end of month: Total Deposits - Total withdrawals
= 137.22 - 23.34
Balance at the end of month = $113.88