9 九 きゅう (kyuu)
10 十 じゅう (juu)
100 百 ひゃく (hyaku)
1,000 千 せん (sen)

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?