Macy measures a truck’s tire mark for one complete length revolution as 120.48 inches long. what is the diameter of the tire?

Can someone me and do the problem plz so i can understand it more better

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).

The graph shown is the graph of which function?