A labor-leisure budget constraint is represented on a graph as a:
a. horizontal line

If an individual's indifference curve map does not obey the assumption of a diminishing MRS, then:

a. the individual will not maximize utility. b. the individual will buy none of good x. c. tangencies of indifference curves to the budget constraint may not be points of utility maximization. d. the budget constraint cannot be tangent to an appropriate indifference curve.

When a firm's long-run average cost curve is horizontal for a range of output, then that range of production displays

A) increasing returns to scale. B) constant returns to scale. C) decreasing returns to scale. D) constant average fixed costs.