Answer: The second one is the sum of 4 and 4 times a number is less than 10. The fourth one is 4 less than 4 times a number is 10 or more. The fifth one is the sum of 4 and 4 times a number is at least 10. And the sixth one is 4 less than 4 times a number is at least 10.
Step-by-step explanation: