Question 1
The costs that are influenced by output in the short run are
◦ total variable costs only.
◦ total fixed cost only.
◦ both total variable costs and total costs.
◦ total costs only.
Question 2
Diminishing marginal returns relates to
◦ the rate of change of marginal physical product.
◦ the change in average output in relation to a unit increase in the input.
◦ the way output increases less than proportionately to all inputs.
◦ the rate of substitution of one input for another.