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Help! Impossible problems!? If (2x+1/3x)=6 what is the value of (3x-1/2x)^2? What type of tide would an ideal recreational beach have? The position of an object at time t is given by s(t) = -4 - 2t. Find the instantaneous velocity at t = 6 by finding the derivative ? How is functions, integrals and derivative useful in work industries? Thank you kindly :)?