The 2nd unit of a 10-unit job took nine hours to complete. The 6th unit has been worked on for two hours, but is not yet finished. Estimate the additional amount of time needed to finish the 6th unit...

Extracted text: The 2nd unit of a 10-unit job took nine hours to complete. The 6th unit has been worked on for two hours, but is not yet finished. Estimate the additional amount of time needed to finish the 6th unit if the work has a 70% learning curve slope O a. 5.114 hours O b. 3.113 hours O c. 3.258 hours O d. 4.143 hours O e. 6.143 hours