The school store sells 4 pencils for $0.80. What is the unit cost of a pencil?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

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).

Find the equation using the point (4,8)