The expression \( p + 4p \) combines the number of problems Vicki has worked, \( p \), with the number of problems Tamra has worked, \( 4p \). We can simplify this expression:
\[ p + 4p = 5p \]
Another expression that could represent the same total is \( 5 \times p \) or simply \( 5p \). This expression represents the total number of problems both Vicki and Tamra have worked together, which is 5 times the number of problems Vicki has worked.
Thus, \( 5p \) is equivalent to \( p + 4p \) and represents the combined total of problems worked by both Vicki and Tamra.