What does this sign mean (<).

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)