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The variables x and y are related by y = 5^x. How do I find the value of x when y is set to 15?

15 = 5^x, we can easily solve this equation by using logs on either side which will give us: log15 = x log 5. Then by solving this for x, we get the result of 1.68 to two decimal places.

Answered by Andrea B. • Maths tutor

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The variables x and y are related by y = 5^x. How do I find the value of x when y is set to 15?

Related Maths A Level answers

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