Can you help and explain this

What kind of bond pays interest which is exempt from tax?

Find the slope of the line passing through a pair of points

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.)