8. Suppose that $5,000 is placed in a savings account at an annual rate of 8.6%%, compounded semiannually. Assuming that no withdrawals are made, how long will it take for the account to grow to $7945? 9. Solve 13 27 = 157*- for x. Leave your answer in exact form. 10. Find the domain of the function /(x) = In(x - 1). Your work must include a sign chart or number line reasoning. Write your answer as an interval or union of intervals. 11. Use the properties of logarithms to expand the expression log ((x45)5) J. Your answer should not have any radicals or exponents. 12. Write the expression as a single logarithm 4log,(w) - Hog,(x) + 6log2 (2).13. Solve each equation for x. Remember to check for extraneous solutions. a. logs (x - 2) = 1 - logs(x - 6) b. -7 + log, (x +3) = -5 14. Graph the logarithmic function f(x) = log,(x -4) - 3. Your graph must include at least 2 points (including an intercept) and an asymptote. 15. Graph the logarithmic function f(x) = 3 - log;x. Your graph must include at least 2 points (including an intercept) and an asymptote