________ questions have to do with explanation and prediction, ________ questions have to do with what ought to be

In the early years of software development the industry had to train its own workers in developing code to build software applications. It was a very costly undertaking as software firms had to shoulder most of the training costs

However, over time the industry began to experience decreasing costs. How and why did this transformation take place?

Suppose that a retailer sells 500 six-packs of Dr. Pepper per day at $3.50/six-pack. Also, suppose that the cross-price elasticity between Dr. Pepper and Pepsi is 0.6. If the retailer lowers the price of Pepsi from $4.00 to $3.60/six-pack, what is the

percentage change in the price of Pepsi? A) 10% increase B) 10% decrease C) 6% decrease D) 6% increase