Which expression is equivalent to 4s + 4s?

1)

16s

2)

8s

3)

8 + 2s

4)

16s2

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.

Awindow has the shape of a rectangle with a semi circle at the top. find the approximate area of the window using the dimensions shown. 4ft by 8ft