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.
About the placement test. 1  The placement test measures your skills in reading, writing and mathematics. 2  It is NOT a pass or fail test. 3  The test is free. 4  The test is untimed but usually takes about two hours to complete. 5  You may retest once prior to enrolling in the reading, writing, or math class into which you tested. 6  Cell phone use is NOT ...