4-6h-8h=60?!? So confused

The doghouse shown has a floor, but no windows. find the total surface area of the doghouse, including the door.

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.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.