If there were no usury law the interest rate would be ________%.

On a graph showing investment along the vertical axis and income along the horizontal axis, _____

a. the investment line will be downward sloping b. the investment line will be upward sloping c. the investment line will be horizontal d. the investment line will be vertical e. the investment line will be U-shaped

Refer to the diagram, where variable inputs of labor are being added to a constant amount of property resources. Average variable cost will be at a minimum when the firm is hiring:

A. Q 3 workers.
B. Q 2 workers.
C. Q 1 workers.
D. more than Q 3 workers.