if the trend for factory 2 from year 4 to year 5 continues, what would be the quality index in year7?

factory2第4年到第5年增长了5个指数，故第七年增长10个指数，到60查看更多

if the trend for factory 1 from year 4 to year 5 continues, what would be the quality index in year7?

factory1第4年到第5年增长了10个指数，故第七年增长20个指数，到85查看更多

how much more primary energy was derived from petroleum than electricity last year?

用去年石油的总量减去电力的总量，得出答案查看更多

in percentage terms, the annual average price of oil decreased more than that of gold between year 4 and 5.

由表中可以看出，石油是一条陡峭的斜线，而金价下降缓慢，所以石油下降得快，此题错误查看更多

the predicted population rise is proportionally greater for India than for China.

1644/1065>1396/1285查看更多

the predicted population rise is proportionally greater for Brazil than for Indonesia.

225/170<316/215查看更多

the predicted population drop is proportionally greater for Japan than for Russia.

100/130<120/140查看更多

what approximately would be the population of Japan in 2030 if it were to decline by 10% in each decade?

130*0.9^3=94.77查看更多

what approximately would be the population of Bangladesh in 2030 if it were to rise by 10% in each decade?

140*1.1^3=186.34查看更多

what approximately would be the population of India in 2030 if it were to rise by 10% in each decade?

1065*1.1^3=1417.52查看更多