Please help me

How do i work this problem out using the equation a=pe^rt

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?