The cost of a 68 m2 falling-film evaporator was 1.65 times the cost of the 30 m2 unit. What exponent value in the cost-capacity equation yielded this result?

A chemical engineer at Western Refining estimated the total cost for a diesel fuel desulfurization system at $2.3 million. If the direct cost factor is 1.55 and the indirect cost factor is 0.43, what is the total equipment cost? Both factors apply to delivered equipment cost.

A marginal cost fiction C'(q) is given in the figure below. If the fixed costs are $10,000, estimate:  a) the total cost to produce 20 units (use left and right hand sums)  b) the additional cost if the company increased production from 20 to 40 units

A survey of total project construction costs for a wide range of buildings (hospitals, schools, banks, nursing homes, etc.) in 2006 found that the average cost was $13,136,431. The mechanical and electrical portions of that cost were $2,511,893 and $1,585,384, respectively. If the total project cost in 2017 increases to $15,700,000, what would the mechanical portion of the total cost equal, provided the percentage (a) remained the same as in 2006, and (b) increased by 20% from the 2006 portion?