Refer to the table below for the input and output information for a firm.

What is the marginal cost if the firm increases its production from 3 units to 4 units?

Your answer: $(Do NOT include words or "$"; Round your answer to one decimal place, unless your answer is an integer.)

(1) (2) (4) (5) Output Land inputs Labor inputs Land rent Labor wage (tons of wheat) (acres) (workers) ($ per acre) ($ per worker) 10 5.5 10 5.5 10 5.5 10 5.5 UT UT UT UT UT UT OF 10 5.5 31 5.5 10 45 5.5