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1. A particle has a velocity {in cm/sec) of v(t) = 21.\" 4. Set up and evaluate integrals to find the following. Include units in your answers. a. Find the particle's displacement on [0,5]. b. Find the particle's distance on [0,5]. 2. The marginal cost function for a chair is C'(x) = 300 E. Set up and evaluate an integral to find the change in the cost if they increase production from 100 chairs to 120 chairs