Respuesta :

If a log has no base written, you should generally (in algebra classes) assume that the base is 10

we raise 10 to the power log 57.9/c = 57.9/c

and 10 to the power 0.293 = 1.9633602768

so 57.9/c = 1.96

c = 57.9 /1.96 = 29.5