A business produces 10 pairs of eyeglasses.It incurs $35 in average total cost and $5 in average fixed cost.The average variable cost of producing 10 pairs of eyeglasses is:

A) $30.
B) $35.
C) $50.
D) $300.

Teamwork as described in the text is ______.

A) lateral decision making
B) vertical decision making
C) hierarchical decision making
D) team leader decision making

Kirk entered into a contract with Yemmi to haul gravel in his large tandem truck from Yemmi's gravel pit to a building site some five kilometres distant, at $60 per load. Before Kirk was to begin performance, his truck was destroyed in a serious traffic accident. Kirk need not perform the contract, as the contract was frustrated by the destruction of the truck.