More scale factor enlargements

This task is about enlarging shapes with scale factors.
 
enlarged shape on a grid
 
 Shape 1 has been enlarged three times to make Shape 2.

 
a)
Enlarge this shape two times.
shape on a grid
 
 
b) Enlarge this shape two times.
shape on a grid
 
 
c) Enlarge this shape four times. shape on a grid