1 Answer

Cem Mutlu · Answer 1 · 2023-01-06T05:34:06+0000

Given that:

Substitute 15 for x in the equation of P to find the profit earned by selling 15 items.

$\begin{gathered} P(15)=0.2(15)^3-10 \\ =665 \end{gathered}$

Substitute 5 for x in the equation of P to find the profit earned by selling 5 items.

$\begin{gathered} P(5)=0.2(5)^3-10 \\ =25-10 \\ =15 \end{gathered}$

Profit more earned by seeling 15 items than 5 items

$\begin{gathered} =P(15)-P(5) \\ =665-15 \\ =650 \end{gathered}$

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