Determine the Value of x, y and z.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

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.)