In 2000, the world population was 6.1 billion. In 2015, the world population was 7.3 billion.
Work out the percentage increase in population.
Give your answer correct to 1 decimal place.

The slope of cd is which segments are perpendicular to cd ? select each correct answer. gf , where g is at (6, 5)and fis at (10, 2) ef, where e is at (4, 1) and f is at (7,5) lm , where lis at (-2, 3) and m is at (-10, 9) jk , where jis at (1, -2) and k is at (10, – 14) next