Answer:
d. f(L,K) = 30L + 240K
Step-by-step explanation:
Assuming that the company employs both workers and automatic answering machines, its total production is the sum of calls answered by all workers and machines. The total calls answered by workers equal the number of workers (L) multiplied by each worker's call capacity per day (30). The total calls answered by machines follows the same logic, it is equal to the number of machines (K) multiplied by each machine's call capacity per day (240).
Therefore, the firm's daily production function is:
f(L,K) = 30L + 240K