2024 AP Calculus Free Response

I work out the 2024 AP Calculus Free Response questions.
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[@joehayes7015]

For an Algebra 2 kid who's learned all the calculus he knows from KZbin, this was highly entertaining.

[@nerfnerd36]

This was the best math video I've ever watched

[@devengineer3190]

OHHHHHHHHHHHHHHHHHH MYYYY GOD i thought i completely skiped frq 5 bc i have never seen that before but I forgot i took the bc exam omg u had me scared for a sec there

[@KrisTheWalrus]

hot coffee mod lmao

[@deeppatel6484]

For Q1 last part, wouldn't it be at a decreasing rate? because the coffee should be cooling down at a decreasing rate right?

[@Fyx5010]

You are correct regarding negative Concavity, but only when t>100. For part D, they are specifically asking for concavity when 12