5. Which graph corresponds to the following equation? y = 23 log x A. B. 6 - C. 4 . NA 2 - N Jx Vx -4 - 2 2 -4-2 2 N -2 -6 6. Which equation corresponds to this graph? A. y= - 10 log x C. y = 10 log x B. y = 10(2)* D. y = 10* -2- WRITTEN RESPONSE - 2 9.. 2-4 7. Strontium-90 decays naturally over time. The approximate time for strontium-90 to decay is given by the function * = -96.336 log 100 where & represents the time in years and P represents the percent of strontium-90 that remains. a) Describe the intercepts, the domain and range, whether the function is increasing or decreasing, and the value at P = 100. What does the P-intercept represent in this case? b) A sample of strontium-90 is taken from a reactor. Estimate the time after which 50% of it will remain. Explain what you did