Given:
Cost function c(x) = I0x+13
Profit Function p(x) = -0.3x² + 47x - 13
Find: revenue function r(x)
Solution:
To solve for the revenue function, simply add the cost and the profit function.
[tex](10x+13)+(-0.3x^2+47x-13)[/tex]
Eliminate the parenthesis.
[tex]10x+13-0.3x^2+47x-13[/tex]
Rearrange the terms according to their degree.
[tex]-0.3x^2+47x+10x+13-13[/tex]
Combine similar terms.
[tex]-0.3x^2+57x[/tex]
Therefore, the revenue function r(x) is -0.3x² + 57x or by commutative property, the revenue function R(x) = 57x - 0.3x². (Option 3).