(-15)-(-18) divided by 3

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.