A function assigns the values. The marginal profit when the value of x is 12 is 561.
What is a Function?
A function assigns the value of each element of one set to the other specific element of another set.
Given the profit of sales is given by the function P(x)=x³-9x²+10x+9. Now if the value of x is 12. The profit will be,
P(x) = x³ - 9x² + 10x + 9
P(12) = (12)³ - 9(12)² + 10(12) + 9
P(12) = 1728 - 1296 + 120 + 9
P(12) = 561
Hence, the marginal profit when the value of x is 12 is 561.
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