Suppose that you implement a queue using a null-terminated singly-linked list, maintaining a reference to the item least recently added (the front of the list) but not maintaining a reference to the item most recently added (the end of the list). What are the worst case running times for enqueue and dequeue?
constant time for both enqueue and dequeue
constant time for enqueue and linear time for dequeue
linear time for enqueue and constant time for dequeue
linear time for both enqueue and dequeue

The prebisch–singer hypothesis concludes that: a. technology lowers the cost of manufactured products, so developing countries should see an increase in their terms of trade. b. developing countries experience a long-run decline in their terms of trade, as the demand for primary products in higher-income countries declines relative to their demand for manufactured goods. c. because of unfair trading practices, labor in developing countries is exploited. d. opec has been responsible for a slowdown in the world's standard of living.

In terms of precent, beer has more alcohol than whiskey true or false

Calculate riverside’s financial ratios for 2014. assume that riverside had $1,000,000 in lease payments and $1,400,000 in debt principal repayments in 2014. (hint: use the book discussion to identify the applicable ratios.)