The expression to represent the total cost of the Uber ride can be written as:
\[ \text{Total Cost} = 5 + 1.50m \]
In this expression:
- \(5\) represents the pickup charge.
- \(1.50m\) represents the cost per mile, where \(m\) is the number of miles driven.
So, the complete expression is:
\[ 5 + 1.50m \]