Question7. What is the solution $\frac{2}{5} x=\frac{4}{10}$ ? A) 10 B) 5 C) 4 D) 1
8. What is the simplest form of $\frac{b^{10}}{b^{4}}$ ? A) $b^{6}$ B) $b^{-6}$ C) $b^{14}$ D) $\frac{1}{b^{6}}$
9. What is the simplest form of $\sqrt{x^{3}} ? \sqrt{x^{2} x}-x \sqrt{x}$ A) $x^{2} \sqrt{x}$ B) $x \sqrt{x}$ C) $x \sqrt{x^{2}}$ D) $3 \sqrt{x}$
10. What is the simplest form of the expression $\sqrt{75} \times \sqrt{3}$ ? A) $\sqrt{15}$ B) $5 \sqrt{3}$ C) 15 D) 225