If you are currently using a gas or electric pool heater, the savings from solar pool heating system will pay for itself in 2-3 years of installation. For example, the average system costs about $5,500 and it typically costs about $2,000 a year to heat a pool with gas.
In the United States, enrollment in AP Statistics classes has increased at a higher rate than in any other AP class. Students may receive college credit or upper-level college course placement upon the successful completion of a three-hour exam ordinarily administered in May.
One of the biggest perks of AP classes is that you can get college credit as long as you score well on the AP Exam at the end of the semester. AP exams are scored on a scale of 1 to 5, with 5 being the highest.Many colleges accept a score of 4 or 5 on an AP exam as college credit in that subject area.ne of the biggest perks of AP classes is that you can get college credit as long as you score well on the AP Exam at the end of the semester. AP exams are scored on a scale of 1 to 5, with 5 being the highest.