Alex sells cars at keith palmer ford. he earns $400 a week plus $150 percar he sells. if he earned $150 last week , how many cars did he sell?

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