9. Solve log (x+3)+ log(x) = 1 a. -5, 2 b. 2 C. 10 d. 7 10. A radioactive substance has a half-life of 7 h. If a sample of the substance has an initial mass of 2000 g, estimate the instantaneous rate of change in mass 1.5 days later. a. -5.6 g/h b. -56 g/h c. -707 g/h d. -0.845 g/h

9. Solve log (x+3)+ log(x) = 1 a. -5, 2 b. 2 C. 10 d. 7 10. A radioactive substance has a half-life of 7 h. If a sample of the substance has an initial mass of 2000 g, estimate the instantaneous rate of change in mass 1.5 days later. a. -5.6 g/h b. -56 g/h c. -707 g/h d. -0.845 g/h

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter4: Exponential And Logarithmic Functions

Section4.CR: Chapter Review

Problem 13CC: Suppose that the initial mass of radioactive substance is m0 and the half-life of the substance is...

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Question

Please help on all asked questions. Please show all work and steps. Please circle the final answer. Please avoid using any calculus when solving please.

9. Solve log (x+3)+ log(x) = 1
a. -5, 2
b. 2
C. 10
d. 7
10. A radioactive substance has a half-life of 7 h. If a sample of the substance has an initial mass
of 2000 g, estimate the instantaneous rate of change in mass 1.5 days later.
a. -5.6 g/h
b. -56 g/h
c. -707 g/h
d. -0.845 g/h

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