Answer: FIRST OPTION
Step-by-step explanation:
To solve this problem you must apply the Intersecting Secant-Tangent Theorem. By definition, when a secant line and a tangent lline and a secant segment are drawn to a circle from an exterior point:
The total measure of the secant shown is:
If the radius is 7, then the diameter is:
Therefore:
You also know that:
Keeping the above on mind, you can substitute values and solve for x: