indifference curve/budget line framework

indifference curve/budget line framework
Answer these two questions and demonstrate understanding of the material by providing a short answer. No more than a 1/2 page per question.

1)In an indifference curve/budget line framework, how does a consumer decide which of all possible combinations of goods to purchase?

2)Explain how new technologies, which increase productivity, affect the average variable cost, average total cost, and marginal cost curves.