How do you write 4x4x4x4 in exponent form?

What is the value of a 1959 Jamaican Halfpenny? Are 1 over 4 and 4 over 16 equivalent? What is scieantific notation? How many line can you draw on a butterfly symmetry? What is 25 of 350? What is the significance of the 13th Amendment? How do you write counting from 1000 to 2000 in Roman numerals? What are the four general categories that help define the breadth of an insurgency? Unique Phil has 15 stamps of denominations 0.37 and 0.23 If the total value of the stamps is 4.85 how many 0.37 stamps does Phil have? How many kilometers equals 400 meters? Area of a circle 12ft diameter? What is 9ft 3 inches x 7ft 5 in square ft? What is the formula for surface area of pipe? Is 257 a natural number? What is the total of one tenth plus two tenths? If a deer travels 12 miles an hour How far does a deer travel in 15 minutes? How do you write 2.2 as a mixed number? How many tons is 800 lbs? What is the unit rate of 6 for 5? What is 39.5 from 100?