1. What number times itself equals 25?
2. What number times itself equals 81?
3. What number times itself equals 10?

Here is a rectangle with a length of 5 units and a width of 2 units.

1. What is the area of the rectangle?
2. Dilate rectangle using center  and a scale factor of 2. Calculate the area of the image.
3. Dilate rectangle using center  and a scale factor of 3. Calculate the area of the image.
4. Complete the table.

   scale factor	area of image in square units	factor by which the area changed
   0.5
   1
   2
   2.5
   3
   4

5. Write an expression for the area of a rectangle with length and width .
6. Imagine dilating the rectangle with length and width by a factor of . Write expressions for the dimensions of the dilated rectangle.
7. Write an expression for the area of the dilated rectangle.
8. Use your work to draw a conclusion about what happens to the area of a rectangle when it’s dilated by a scale factor of .