Determine whether each function is invertible. If it is invertible, find the inverse.

i) {(x, y)| y=x+2}

The function is/is not invertible.
The inverse of y^-1 = ?

Please help

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.)

Which situation is an example of an observational study?

Multiply the polynomials (x+3)(x^2-6x+5)