Xdetermine whether it shows that and y are proportional .

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 are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Ineed to know the answer to this algebra question.