• A. $\frac{1}{x}$
• B. $\frac{1}{x In 10}$
• C. $\frac{{\log }_{10}e}{10}$
• D. $\frac{1}{x}{\log }_{10}e$

Answer: Option B

Explanation:

• A. $8 km/h^2$
• B. $800 km/h^2$
• C. $16 km/h^2$
• D. $80 km/h^2$

Answer: Option A

Explanation:

• A. $1$
• B. $\mathrm{X}$
• C. $x^2$
• D. $x^{2}y$

Answer: Option C

Explanation:

• A. $\frac{5}{\left(5+0.05\right)}$
• B. $\frac{5}{{\left(5+0.05\right)}^2}$
• C. $\frac{5}{{\left(5+0.5\right)}^2}$
• D. $\frac{5}{5+{(0.05)}^2}$

Answer: Option D

Explanation: