I need help

1. Solve the following; a. 2^(5x - 4) = 64 b. 5^x = 135 c. 3^(2x - 1) = 7^(x + 1) d. In(5x) = 2 e. logx + log(x -3) = 1 2. A colony of bacteria that grows according to the las of uninhibited growth is modeled by the function N(t) = 90e0.oot , where N is measured in grams and t is measured in da a. Determine the initial amount of bacteria. b. What is the growth rate of the bacteria? c. What is population after 7 days? d. How long will it take for the population to reach 250 grams? e. What is the doubling time for the population