?Brown's, a local? bakery, is worried about increased costs particularly energy. Last? year's records can provide a fairly good estimate of the parameters for this year. Wende? Brown, the? owner, does not believe things have changed? much, but she did invest an additional ?$2 comma 500 for modifications to the? bakery's ovens to make them more energy efficient. The modifications were supposed to make the ovens at least 15 ?% more efficient. Brown has asked you to check the energy savings of the new ovens and also to look over other measures of the? bakery's productivity to see if the modifications were beneficial. You have the following data to work? with:
Last Year Now Production? (dozen) 1 comma 600 1 comma 600 Labor? (hours) 350 325 Capital Investment? ($) 16 comma 000 18 comma 500 Energy? (BTU) 3 comma 000 2 comma 800