3. Jennifer is taking a 5 -question true-or-false quiz. She has forgutten her glasses and cannot read the questions, so she gueses on each question. Assuming that the questions are qqually likely to be true or false, what is the probability that she gurses all five questions correctly?

Simplify \( \frac{3 y^{2}}{8 t^{3}} \times \frac{64 t^{3} y^{2}}{27 t} \div \frac{y^{4}}{t} \)

18. Select all expressions equivalent to \( 102.4-\left[\left(2^{3} \times 3\right)+13.8\right] \div 7 \) \( 102.4-\left[\left(3^{2} \times 3\right)+13.8\right] \div 7 \) \( \left(10^{2}+2.4\right)-(37.8 \div 7) \) \( 102.4-\left(6^{2}+1.8\right) \div 7 \) \( 102.4-\left[\left(2^{3} \times 3\right)+20.8\right] \) \( (60+42.4)-[(8 \times 3)+13.8] \times 7 \)

If a represents the rate of an airplane in still air and \( c \) represents the rate of the wind, then \( a+c \) represents the rate of the airplane traveling with the wind. Select one: False

13. A printing error in a math book removed the brackets and parentheses from a numerical expression. Rewrite the expression \( 3^{2}+7 x 4+5 \) with parentheses so that it is equivalent to 69 .

6. Sea \( g(x)=2 p x^{5}-3 \) una función en los reales. Si \( g\left(\frac{3}{2}\right)=\frac{3}{8} \), entonces el valor numérico de \( p \) es A) \( \frac{1}{72} \) B) \( \frac{2}{81} \) C) \( \frac{4}{81} \) D) \( \frac{2}{9} \) E) \( \frac{8}{9} \)