Math 107 help

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MTH 107 Quiz 12 (Not to Turn-in)

Name:____________________

Instructions: Write your answers in the space provided. You must show all of your work for full credit. Use techniques learned in class when possible. Points are awarded based on the quality of your work. Have Fun. (1) Is the following a true statement? (ln x)2 = 2 ln x Explain how you know. (2) Solve by algebra. Show your work. Round to 5 decimal places if needed. 2 − log5(x − 10) = log5(x)

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(3) Solve by any technique learned in class. Show your work. Round to 5 decimal places if needed. 2(x−3) = 16x (4) Suppose Jessica invested some money into an account which earns 5% interest compounded semi-annually. After 8 years she has $2500 in the account. How much did she originally invest? Show all of your work.