Lazer Technologies Inc. (LTI) has produced a total of 20 high-power laser systems that could be used to destroy any approaching enemy missiles or aircraft. The 20 units have been produced, funded in part as private research within the research and development arm of LTI, but the bulk of the funding came from a contract with the U.S. Department of Defense (DoD). Testing of the laser units has shown that they are effective defense weapons, and if redesigned to add portability and easier field maintenance, the units could be truck-mounted. The DoD has asked LTI to submit a bid for 100 more units. The 20 units that LTI has built so far cost the following amounts and are listed in the order in which they were produced: Use Exhibit 6.4 and Exhibit 6.5. UNIT NUMBER COST UNIT COST (5 MILLIONS) NUMBER (5 MILLIONS) 1 $16.0 11 $6.8 10.0 12 6.7 9.3 13 6.5 8.5 14 6.5 8.2 15 6.4 7.9 16 6.3 7.6 17 6.1 7.4 18 6.0 7.1 19 5.9 10 7.0 201 6.0 a. Based on past experience, what is the learning rate? (Do not round intermediate calculations. Round your answer to the nearest whole percent.) Learning rate b. What cost should LTI use in their bid for the total order of 100 additional units, assuming that learning continues? (Use your rounded learning rate from Part a. Enter your answer in millions of dollars rounded to one decimal place.) Cost for 120 more units million dollars