Which of the following is an example of a good whose price goes down because of improvements in technology?

Since 1990, the growth rate of real gross private investment in the United States has been relatively ________ and the growth rate of real personal consumption has been relatively ________

A) stable; stable B) stable; volatile C) volatile; stable D) volatile; volatile

If a consumer purchases only two goods (x and y) and the demand for x is elastic, then a rise in the price of x:

a. will cause total spending on good y to rise. b. will cause total spending on good y to fall. c. will cause total spending on good y to remain unchanged. d. will have an indeterminate effect on total spending on good y.