7. find the direction and magnitude of the vectors
a. x=(5.0 m) î + (-2.0 m) î
b. b=(-2.0 m) î + (5.0 m) ſ and
c. åt b
8. find the direction and magnitude of the vectors
a. a = (25 m) î + (-12.0 m) ſ

i think the answer is tomato juice? not entirely sure though

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