HI there. I need help with the following problems. I would appreciate any help!

You've just completed a pilot run of 10 units of a major product and found the processing time for each unit was as follows: Use Exhibit 4A.5 and Exhibit 4A.6. TIME (HOURS) UNIT NUMBER 1 2 3 4 5 6 7 8 9 810 580 510 440 420 380 360 340 330 320 10 a. According to the pilot run, what would you estimate the learning rate to be? (Do not round intermediate calculations. Round your answer to the nearest whole percent.) Estimated learning rate 75% b. Based on (a), how much time would it take for the next 190 units, assuming no loss of learning? (Round your answer to the nearest whole number.) Time taken hours c. How much time would it take to make the 1,000th unit? (Round your answer to the nearest whole number.)