Xavier is designing a display for a bulletin board that is 3.5 feet wide. He wants to place a 14-inch-wide poster in the center of the bulletin board. How many inches of space remain on either side of the poster? Enter a unit that best describes the number. Number 3.5 Unit Description
Find the unit

28 inches

Step-by-step explanation:

To solve this question you have to convert the bulletin board length from feet into inches so you can do the calculation. Every foot equal to 12 inches, so the length in inch will be:

3.5 feet * (12 inches/feet)= 42 inches.

Xavier put 14 inches poster inside the 42 inches board. You need to subtract the poster length from the board. The remaining space will be: 42 inches - 14 inches= 28 inches

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation: