Square root of 19 in exponential form

When only separate discreet points are graphed it is called?

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).

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?