The first unit of production takes 20 hours to produce and the learning rate is expected to be 90 percent. How long will it take to produce the fourth unit

i think you have to let the moderators that you want your old account to be activated.

a

b

b

a

c

b

d

d

none of these are correct, as they are all sources of american law

a

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;