Based on the knowledge that you already have, the things you have learned upon listening to the discussion, and the thoughts you have formulated on your reflection Generalize your understanding by giving a one sentence about all of these.​

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

i would say

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m