Answer: -7, -4, -2, 0, 0.9, 0.99, 0.999, 1
Step-by-step explanation: The numbers you need to pick, have to be less than or equal to 1. -7, -4, -2, 0, 0.9, 0.99, 0.999, and 1, are less than or equal to 1. 1, 1.001, 1.01, 1.1, 2, 4, 6, and 9, are all greater than one, so they won't fit the equation.