The mass of a particular substance is known to grow exponentially at a rate of 7.1% per day. Its initial mass was 45 grams and, after t days, it weighed 122 grams. The equation modelling this growth is 45 x 1.071 122. Use the method of taking logs to solve this equation for t, giving your answer correct to the nearest day. (Your answer should be a number, without units)

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The mass of a particular substance is known to grow exponentially at a rate of 7.1% per day. Its initial
mass was 45 grams and, after t days, it weighed 122 grams.
The equation modelling this growth is
45 x 1.071
122.
Use the method of taking logs to solve this equation for t, giving your answer correct to the nearest day.
(Your answer should be a number, without units)
Transcribed Image Text:The mass of a particular substance is known to grow exponentially at a rate of 7.1% per day. Its initial mass was 45 grams and, after t days, it weighed 122 grams. The equation modelling this growth is 45 x 1.071 122. Use the method of taking logs to solve this equation for t, giving your answer correct to the nearest day. (Your answer should be a number, without units)
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