The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y. y = StartFraction 3 x 10 Superscript 8 Baseline Over x EndFraction

What is the wavelength for radio waves with frequency 3 × 109?
Answer choices:
1 × 10–1 m
3 × 10–1 m
3 × 1017 m
9 × 1017 m