I’ve been posting this all day can someone me

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).

What number gives you a irrational number when added to 2/5

Find the sum of the given arithmetic series. 24 + 17 + 10 + 3 + + (–39)