#### Answer

$x = 15.0$

#### Work Step by Step

Since we have the measure of one angle and the measure of the side opposite to that angle, we can use the tangent ratio to find $x$, which is the side adjacent to the given angle.
The tangent ratio is given as follows:
tan $A = \frac{opposite}{adjacent}$
Let's plug in what we know:
tan $25 ^{\circ} = \frac{7}{x}$
Multiply each side by $x$:
tan $25 ^{\circ}(x) = 7$
Divide both sides by tan $25^{\circ}$:
$x$ = 7/tan $25 ^{\circ}$
Divide to solve:
$x = 15.0$