Final answer:
The profit function is P(x) = 12x - 984, and to achieve a profit of $636, the business must produce 135 units.
Step-by-step explanation:
To calculate the profit function, we subtract the cost function, C(x), from the revenue function, R(x). The revenue function given is R(x) = 22x, and the cost function is C(x) = 10x + 984.
The profit function P(x) can be calculated as follows:
P(x) = R(x) - C(x)
P(x) = 22x - (10x + 984)
P(x) = 22x - 10x - 984
P(x) = 12x - 984
To find out how many units must be produced to make a profit of $636, we set P(x) equal to 636 and solve for x:
636 = 12x - 984
12x = 636 + 984
12x = 1620
x = 135
Therefore, the business must produce 135 units to achieve a profit of $636.