The table below represents the output level of a particular firm producing soft drinks. Use the information in the table to answer the questions that follow...

The table below represents the output level of a particular firm producing soft drinks. Use the information in the table to answer the questions that follow. 

Give the cost equation of the firm in Naira as C = 20 + 2q where C is total cost and q is quantity produced, calculate:
(a) The total cost of producing: (i) 12 units of output (ii) 36 units of output.
(b) The average cost when: (i) 48 units were produced (ii) 58 units were produced.
(c) The marginal cost when: (i) 23 units were produced (ii) 36 units were produced.
(d) If the firm is operating in a perfectly competitive market and the market price is N5 per unit, determine the profit when: (i) 23-units are produced (ii) 48 units are produced.