Question: SHORT ANSWER: 13. Multiply and simplify: (5+ 0(6 - 70. Write the answer in the form a + bi, where a and b are real

SHORT ANSWER: 13. Multiply and simplify: (5+ 0(6 - 70. Write the answer in the form a + bi, where a and b are real numbers. Answer: 14. Solve, and write the answer in interval notation: x+2 x-9 -50. Answer: 15. A bowl of soup at 170" F. is placed in a room of constant temperature of 70 F. The temperature I of the soup / minutes after it is placed in the room is given by 7() = 70 + 100 e - 0.075 + Find the temperature of the soup 6 minutes after it is placed in the room. (Round to the nearest degree.) Answer: 16. Find the value of the logarithm: logi2 144 Answer 17. Solve: 23x+7 =4. Answer. 18. Suppose $5,100 is invested in an account at an annual interest rate of 4.3% compounded continuously. How long (to the nearest tenth of a year) will it take the investment to double in size? Answer. 19. Let f (x) = x + 12x + 36. (a) Find the vertex. Answer: (b) State the range of the function. Answer: (c) On what interval is the function decreasing?

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