\[1)\ y = 5^{x};\]
\[y^{'}(x) = 5^{x} \bullet \ln 5.\]
\[2)\ y = 4^{x};\]
\[y^{'}(x) = 4^{x} \bullet \ln 4.\]
\[3)\ y = 9^{x + 2};\]
\[y^{'}(x) = 9^{x + 2} \bullet \ln 9.\]
\[4)\ y = 7^{x - 3};\]
\[y^{'}(x) = 7^{x - 3} \bullet \ln 7.\]
\[5)\ y = \log_{5}x;\]
\[y^{'}(x) = \frac{1}{x\ln 5}.\]
\[6)\ y = \log_{4}x;\]
\[y^{'}(x) = \frac{1}{x\ln 4}.\]
\[7)\ y = \lg(x - 1);\]
\[y^{'}(x) = \frac{1}{(x - 1)\ln 10}.\]
\[8)\ y = \lg(x + 3);\]
\[y^{'}(x) = \frac{1}{(x + 3)\ln 10}.\]