Question

yesterday, justin had 80 baseball cards. today, he gave n away. using n, write an expression for the number of cards justin has left.

Explanation:

Step1: Identify initial and given away

Justin started with 80 cards, gave away \( n \) cards.

Step2: Formulate the expression

To find remaining cards, subtract given away from initial: \( 80 - n \).

Answer:

\( 80 - n \)