To determine the marginal revenue at a quantity of six jackets, we need to look at the change in total revenue as the quantity increases from five jackets to six jackets. The marginal revenue is found by calculating the difference in total revenue between these two quantities.
Given the data:
- Total Revenue for 5 jackets: 80 dollars
- Total Revenue for 6 jackets: 90 dollars
The formula to find the marginal revenue is:
[tex]\[ \text{Marginal Revenue} = \text{Total Revenue at quantity 6} - \text{Total Revenue at quantity 5} \][/tex]
Substitute the given values:
[tex]\[ \text{Marginal Revenue} = 90 - 80 \][/tex]
[tex]\[ \text{Marginal Revenue} = 10 \][/tex]
Therefore, the marginal revenue, in dollars, at a quantity of six jackets is 10 dollars.
The correct answer from the given options is:
10
