Please find the time required for the forth unit = ___ hours (rounded to the nearest whole number)

Cost of the forth unit= ___ dollars (rounded to the second decimal place)

time required for the fifth unit____

cost of fifth unit____

time required for the sixth unit____

cost of sixth unit ___

time required for the seventh unit____

cost of seventh unit_____

Suad Alwan, the purchasing agent for Dubai Airlines, has determined that the second plane took 16,000 hours to produce. Using an 85% learning curve and a $30-per-hour labor charge, he wants to determine the cost of the four additional planes