A new car is purchased for $38,000 and over time its value depreciates by one half every 4.5 years. How long, to the nearest tenth of a year, would it take for the value of the car to be $10,900?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units