What Is The Wavelength Of Light That Has A Frequency Of 4.67 X 10^14s^-1?

The frequency times the wavelength is the speed of light.
c = (frequency)*(wavelength)
3*10⁸ m/s = (4.67*10¹⁴/s)*(wavelength)    (fill in numbers)
(3*10⁸)/(4.67*10¹⁴) m = wavelength    (divide by frequency)
6.42*10^-7 m = wavelength

This is 642*10^-9 m = 642 nanometers.