Translate the following sentence into an algebraic equation: "$x$ is $25\%$ of $200$." Which equation correctly represents the sentence?

Which of the following correctly expresses the decimal $0.03$ as both a percentage and a fraction in simplest form?

A jacket priced at $\$250$ is discounted by $30\%$. A $7\%$ sales tax is then applied to the discounted price. What is the final price?

If $\$540$ in simple interest is earned over $6$ years at an annual rate of $6\%$, what was the principal amount borrowed?

Compare the percent change for the following two scenarios:

Scenario A: A value decreases from $200$ to $150$.

Scenario B: A value increases from $150$ to $200$.

Which pair represents the correct percent changes?