Use the formula A= P(1 + i)" to calculate compound interest and the formula P= A(1 + i)" to calculate present value.

Officer brimberry wrote 24 tickets for traffic violations last week, but only 9 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]