Answer: 1. [tex]100+50w\geq18,000[/tex]
2. Sal will need to make 358 seven letters words to break the record.
Step-by-step explanation:
Given: Points we get for playing the game = 100
Points foe each 7 letter word we make = 50
Points required to break the record=18,000
Let w be the number of 7 letters words Sal made in the game.
Then it gives the inequality [tex]100+50w\geq18,000[/tex]
[tex]\Rightarrow50w=18,000-100\\\Rightarrow50w=17900\\\Rightarrow\ w=\frac{17900}{50}\\\Rightarrow\ w=358[/tex]
Hence, Sal will need to make 358 seven letters words to break the record.