Final answer:
To determine the cost per square foot of Marvin's deck, multiply the deck's dimensions to find the area, and then divide the total cost by the area. The deck, measuring 8.25 feet by 12.5 feet, costs roughly $12.32 per square foot.
Step-by-step explanation:
The student is asking how to calculate the cost per square foot of Marvin's deck. To find this, you first need to calculate the total area of the deck by multiplying the length by the width. The area of Marvin's deck is 8.25 feet times 12.5 feet, which equals 103.125 square feet. Next, you take the total cost of the deck, $1,270, and divide it by the total area to find the cost per square foot.
So, the calculation would be $1,270 divided by 103.125 square feet, which equals approximately $12.32 per square foot. That is the cost of Marvin's deck per square foot.