The answer would be 14 because 4x__=56 ? 4 x14 =56
3.5 feet converted to inches is 42 inches. 42"-14"=28"
28" divided by 2 sides is 28/2 = 14" on either side if the poster remaining
The area of rectangular garden is 
<h3><u>Solution:</u></h3>
Given that a rectangular garden has width = 4x - 6
Length of rectangular garden = 2x + 4
To find: area of rectangular garden
<em><u>The area of rectangle is given as:</u></em>

Substituting the values in given formula,

Thus the area of rectangular garden is 
Let x = the unknown angle
sine of an angle is measure of the opposite leg divided by the hypotenuse.
sin x = 10/21
To now solve for x, we so the inverse of sine.
sin⁻¹(10/21) = x
Plug this into your calculator.
x ≈ 28.44 degrees. This would round down to 28 degrees, option B is your answer.