Problem 3.1: 4^-2 = ? [Solution]

Problem 3.2: 7^-3 = ? [Solution]

Problem 3.3: (- 6)^-3 = ? [Solution]

Problem 3.4: (7/5)^-2 = ? [Solution]

Problem 3.5: (6/11)^-1 = ? [Solution]

Problem 3.6: Write out 3.0412 as single-digit numbers times powers of ten. [Solution]