Need some help on these review problems. Please indicate which answer.

Question 26 1 pts According to the Economics concept, what is the change in Total cost when the output produced is increased at the marginal (or one unit)? (By Calculus, it's the derivative of the Total Cost) 0 Average Cost 0 Marginal Cost 0 Variable Cost 0 Variable Cost Question 27 1 pts According to the Economics concept, what is the change in Total product when the input used (given that rms only use labor as their only input) is increased at the marginal (or one unit)? (By Calculus, it's the derivative of the Total Product) 0 Average Productivity of Labor 0 Marginal Productivity of Capital 0 Marginal Productivity of Labor 0 No answer Question 28 1 pts Given the Total cost function is TC = Q3 5Q2 + 12Q + 75, where Q is the total output produced. The rm would like to know that when producing 10 units, what is the change of cost at the marginal ? In other words, what is the Marginal Cost when Q = 10? o 195 o 212 086 O 194 Question 29 1 pts (1Q+2)1 Q would like to know that when producing 2 units, what is the change of cost at the marginal ? In other words, what is the Marginal Cost when Q = 2? Given the Total cost function is TC = , where Q is the total output produced. The rm 0 12/4 0 43/5 0 49/4 0 41/6 Question 30 1 pts 5 5 Given the Total Product function is Q = LE 2L3 + 5, where Q is the total output produced and L is the labor or the only input used. The rm would like to know that when using one worker, what is the change of output at the marginal ? In other words, what is the Marginal Product of labor when L=1? 0 3/2 0 -a/2 O 1/2 0 -1/2