Find the area in mi^2

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount