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which of the following is the value of a when the function ax) - 3|x| is written in the standard form of an absolute value function?

This is so hard and it’s for a test

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)