CAN someone pls help me

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?