Pls help this is due ASAP I will brainlest):

Arrange these numbers from least to greatest 3/5 5/7 2/9

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)

What is the solution of log2  (3x  -  7)  =  3? 4 5