have a math worksheet that I'm not sure if I did right and want to check my answers. Thank you!

11. Solve the following logarithm problem for the positive solution for r. log, = = -4 12. Write the log equation as an exponential equation. You do not need to solve for x log (r + 5x - 18) = z+2 13. A person invests 10000 dollars in a bank. The bank pays 5-5% interest compounded monthly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 27400 dollars? A = P(1 + - )m 14. Solve for x to the nearest roth. 1300 = 3190(0.98)3-4 15. Solve for x: 3432 +2 = 2401-42+1