Every Friday night, Gustavo pays $39.99 to eat nothing but crab legs at the all-you-can-eat seafood buffet at the M Resort in Las Vegas. On average, he consumes 26 crab legs each Friday.The average cost of each crab leg to Gustavo is $ (Enter your response rounded to two decimal places.)The marginal cost of an additional crab leg is $ (Enter your response as a whole number.)