Answer: 6 inches wide and 14 inches tall .
Explanation:
Given : For wall unit measures display,
width = 3 inches
height = 7 inches
Scale used = 2 inches: 4 feet
So, 1 inch = 2 feet [divide both sides by 2]
That means, actual width of wall unit = 3 x 2 inches = 6 inches
Actual height of wall unit = 7 x 2 inches = 14 inches
hence, the actual measurements of wall unit are 6 inches wide and 14 inches tall .