Please Help. Serious answers only please.

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

In july, the average temperature in one us city was 29°c. by december, the average temperature had fallen by 29°c. explain why the average temperature in december was 0°c.

Given: x - 4x > 0, then the solution set in interval notation is: (-2, 0) true o false