Can you help with part a & b please?

Some biologists model the number of species S in a fixed area (such as an island) by the species-area relationship log S = log c + k log A where c and k are positive constants that depend on the type of species and habitat. a) Solve the equation for S. b) Use part a) to show that if k = 3, then doubling the area increases the number of species eightfold