Translate each of the following English Sentences into Mathematical Sentences.
[tex] \\ \\ [/tex]
1.) A certain number is less than 12

2.) A number decreased by 7 is less than 16

3.) The difference between a number and 3 is at most -3

4.) Three times a number is at least 25

5.) Four times a number decreased by 8 is at least the number increased by 4​​