23. (EPCAR 1990) Considere a expressāo \( 0,363636 \ldots+\frac{\frac{1}{3} \cdot 0,6-0,3}{\left(-\frac{1}{2}\right)^{3} \div \frac{3}{8}} \) seu valor é: a) \( \frac{7}{110} \) b) \( \frac{73}{110} \) c) \( \frac{109}{330} \) d) \( \frac{131}{330} \) e) \( \frac{109}{110} \)

Evaluate this expression. \( 6^{-2} \) \( 6^{-2}=\square \) (Type an integer or a simplified fraction.

Which expression results when the change of base formula is applied to \( \log _{4}(x+2) \) ? \( \frac{\log (x+2)}{\log 4} \) \( \frac{\log 4}{\log (x+2)} \) \( \frac{\log 4}{\log x+2} \) \( \frac{\log x+2}{\log 4} \)

\( \sqrt {36}\div 6+2^{0}-^{3}\sqrt {8}+2^{3}= \)

The growth rate of a plant is 0.00000716 miles per hour. Write this in scientific notation. \( 0.00000716 \mathrm{mi} / \mathrm{hr}=\square \mathrm{mi} / \mathrm{hr} \) (Use the multiplication symbol in the math palette as needed.)

2 These numbers are not in standard form. Write each number in standard form. \( \begin{array}{ll}\text { a } 45 \times 10^{6} & \text { b } 28 \times 10^{8} \\ \text { c } 300 \times 10^{4} & \text { d } 995 \times 10^{7}\end{array} \)