20 - 9w = 4 ( 15 - w )

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

Officer brimberry wrote 32 tickets for traffic violations last week, but only 4 tickets this week. what is the percent decrease? give your answer to the nearest tenth of a percent.

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)