Answer:
The expression 4n-8 is an algebraic expression that can be used to represent a wide range of real-world problems. For example, suppose you are planning to buy a new bike that costs $1,500, but you only have $1,000 in your bank account. You could use the expression 4n-8 to represent the amount of money you need to borrow on your credit card to make the purchase.
To solve for n, you would set 4n-8 equal to the amount you need to borrow, which in this case is $500. Then, you would solve for n by adding 8 to both sides of the equation and dividing by 4. This gives you n=3, which means you would need to borrow $500 and pay it back over time with interest.
In general, algebraic expressions like 4n-8 can be used to model a wide range of real-world problems, such as calculating the cost of a purchase with tax, determining the distance traveled by a moving object, or predicting the growth of a population over time.