I need help on this please

Can anyone me with 32,33,36,37,and 40.

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).

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10