Select all expressions that are equivalent to 8 times 8 times 8 times 8 times 8

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.

What is always true about a positive integer raised to a negative odd power?

3.4a=57.8 what is the the value of a