Royal Holland Bakery is a company that specializes in creating extravagant and unique wedding cakes for large wedding festivities. The company's owner is interested in learning more about the company's cost structure, so he has prepared the following activity and cost data. The number of weddings catered, according to the proprietor, is the best indicator of activity.

Month Weddings Costs Incurred (In thousands of Rupiah)

March 3 Rp 3,800

April 2 Rp. 3,600

May 6 Rp. 4,000

June 9 Rp. 4,300

July 12 Rp. 4,500

Aug 20 Rp. 5,200

Required:

a. Distinguish between fixed cost, variable cost, and mixed cost? Then would you illustrate the examples of fixed and variable cost in Holland Bakery company!

b. Estimate the variable cost each wedding and the overall fixed cost per month using the highlow method. (Round the overall fixed cost to the nearest Rupiah and the variable cost per wedding to the next cents!

c. Estimate the variable cost each wedding and the overall fixed cost per month using the leastsquares regression method. (Round the overall fixed cost to the nearest Rupiah and the variable cost per wedding to the next cents.