Answer:
The given three expressions can be written as statements.
The three expressions are,
1). Statement for 4n
4n - Four times of a number 'n'
2). Statement for r/2
r/2 - One by half of a number 'r'
3) Statement for t - 5
t - 5 - Five is subtracted from a number 't'
These are the three statements of the given expressions