by keeping f fixed and making e variable it is clear that  is also constant. the well is covered with a hood shaped construction. approximately 24.9% work because they want to be independent, while 23.3% work because they consider work to be a personal achievement. in the united kingdom, the song peaked at number five, and is spears' tenth best-selling single in the country, having sold over 225,000 copies. most vehicles are double-ended, with operating controls at both ends and doors on both sides. the third scene is a medieval castle, where flower rows and bushes can be grown. 