A certain game and fun center charges a fee to rent the party room for birthday parties plus an additional fee per guest. The graph shows the total cost for several guests. Find and interpret the rate of change and initial value.

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)