Please help with these 6 questions! (Just match the letter and number!)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).