What is 4.9% as a decimal and a fraction

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?