Answer:
Rate of change of the function, dC/dW = 3
Explanations:
Let the cost be represented as C
Let the wight be represented as W
[tex]\begin{gathered} (W_1,C_1)\text{ = (1, 3)} \\ (W_2,C_2)\text{ = (4, 12)} \end{gathered}[/tex]
The rate of change of the function can be calculated using the formula:
[tex]\begin{gathered} \frac{dC}{dW}=\text{ }\frac{C_2-C_1_{}}{W_2-W_1} \\ \frac{dC}{dW}=\text{ }\frac{12-3}{4-1} \\ \frac{dC}{dW}=\text{ }\frac{9}{3} \\ \frac{dC}{dW}=\text{ 3} \end{gathered}[/tex]
