Final answer:
To determine how much Liam paid for the posters, we'd calculate the total costs of posters, apply the coupon to the rap poster, and subtract the gift card. But, the prices of the posters are not given, so we can't complete the calculation.
Step-by-step explanation:
The question from the student involves a numerical expression problem. To calculate how much Liam paid for the posters, we need to consider the cost of each type of poster, the application of a $35 gift card, and the 50% off coupon for the rap poster.
However, the student's question does not provide the individual prices of the vintage, rock, and rap posters, which are necessary to calculate the total cost. Assuming VP stands for the price of a vintage poster, RP stands for the price of a rock poster, and rapP stands for the price of a rap poster, the numerical expression to find out how much Liam paid would be:
(2 × VP) + (2 × RP) + (1 × rapP × 0.5) - $35
However, without the actual prices, we cannot evaluate this expression.