P: Successful mining took time and capital, particularly once most of the timber around the Klondike had been cut down. A realistic mining operation required $1,500 for wood to be burned to melt the ground, along with around $1,000 to construct a dam, $1,500 for ditches and up to $600 for sluice boxes, a total of $4,600. The attraction of the Klondike to a prospector, however, was that when gold was found, it was often highly concentrated. Some of the creeks in the Klondike were fifteen times richer in gold than those in California, and richer still than those in South Africa. In just two years, for example, $230,000 worth of gold was brought up from claim 29 on the Eldorado Creek.
Answer this: How many more dollars did a realistic mining operation require for wood than for sluice boxes?

A: 900

P: As of the Fall 2017 quarter, Louisiana Tech had an all-time record high enrollment of 12,873 students pursuing degrees in five academic colleges. The student body has members from every Louisiana parish, 47 U.S. states, and 64 foreign countries. Louisiana residents account for 85.0% of the student population, while out-of-state students and international students account for 11.1% and 4.0% of the student body, respectively. The student body at Louisiana Tech is 69.4% white, 13.3% black, 3.8% international students, and 13.5% other or "unknown" ethnicity. The student body consists of 50.2% women and 49.8% men.
Answer this: How many percent of the student population are not Louisiana residents?

A: 15

P: The Browns faced the Miami Dolphins without their leading rusher Peyton Hillis in a Week 3 matchup. The Dolphins took an early lead, converting a Colt McCoy interception into a 7-0 lead on a touchdown pass from Chad Henne. The Browns tied the game on a touchdown pass from McCoy to Joshua Cribbs. The Dolphins took the lead again on a Dan Carpenter field goal, and took a 10-7 lead into halftime. The Browns again tied the game in the third with Phil Dawson's field goal. The Dolphins added two more field goals, and had the Browns down six points in the final minutes. McCoy led the Browns down the field, and hit Mohamed Massaquoi on a 14-yard touchdown pass to give the Browns a last-minute, 17-16 victory. With the win, the Browns improved to 2-1 and it also became the first season since 2007 to where the team was actually at least a game above .500.
Answer this: How many points were the Dolphins leading by at the end of the first half?

A:
3