Explanation Given Information: The given exponent is 7 x = 1.2 . Formula used: According to change of base rule: If, a > 0 , a ≠ 1 , b > 1 , b ≠ 1 and x > 0 then following hold true. log a x = log b x log b a Calculation: Consider the given expression. 7 x = 1.2 Write the equivalent form of the expression. If any logarithm is in form of log b M = p , then it is equivalent to the M = b p Here, b = 7 , M = 1.2 , p = x . 7 x = 1.2 x = log 7 1.2 Apply change of base rule. x = log 1

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Chapter 12, Problem 29T

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To calculate: The value of x if 7x=1.2 and to approximate it to four decimal places.

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Chapter 12, Problem 28T

Chapter 12, Problem 30T

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The value of x if 7 x = 1.2 and to approximate it to four decimal places.

Solution Summary: The author calculates the value of x if 7x=1.2 and to approximate it to four decimal places.

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To calculate: The value of x if 7x=1.2 and to approximate it to four decimal places.

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Chapter 12 Solutions