please show work

b. b. What is the average tenure of an employee? ANSWER 2. Consider a process that makes high-end boards that get mounted on skateboards. The process starts with a unit cost of $11 for the first unit, i.e., c(1)=11, and has a learning rate of LR=0.85. What will be the unit cost for the 256 th unit? ANSWER 3. Consider a process restringing tennis rackets. The process starts with a unit cost of $12 for the first unit, i.e., c(1)=12, and a learning rate of LR=0.9. What will be the unit cost for the 29 th unit