Question

Roller coaster curve. I need some help with the part in red. I'm not really sure what to do.

Answer 1

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Step-by-step explanation:

I explained everything in the other problems you asked.

`f(x)=\[ \begin{cases}0.7x & x\leq 0 \\-0.0275x^2+0.7x & 0\leq x\leq 40 \\-1.5x&x>40\end{cases}\]`