Evaluate the integral. dt

A. + C
B. -7(cot-1 t)8+ C
C.  + C
D. 7(cot-1 t)6+ C


Answer: C

Mathematics

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Solve for x. Check your answers.x - 12 = -9

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Each day Larry needs at least 10 units of vitamin A, 12 units of vitamin B, and 20 units of vitamin C. Pill #1 contains 4 units of A and 3 of B. Pill #2 contains 1 unit of A, 2 of B, and 4 of C. Pill #3 contains  of A, 1 of B, and 5 of C.Pill #1 costs 9 cents, pill #2 costs 15 cents, and pill #3 costs  Larry wants to minimize cost. What are the constants in the problem?

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Mathematics