Final answer:
The expression that represents the sum of 7 and p is written algebraically as 7 + p.
Step-by-step explanation:
The student asked for an expression that represents the sum of 7 and p.
This expression can be written algebraically as 7 + p. In mathematics, when we want to show the sum of a number and a variable, we simply place a plus sign (+) between them.
It’s important to ensure that we do not confuse this expression with any operations that might involve exponents or probabilities, which are entirely different concepts.