We'll probably need a photo of the problem if possible.
A m8 the rule is to divide by 2
Answer:
y=-2x-1
Step-by-step explanation:
The full length of one line times the length of the line outside the circle is equal the the other line.
(7+x)*7 = (13 +8) * 8
Simplify:
7x +49 = 21 * 8
7x +49 = 168
Subtract 49 from each side:
7x = 119
Divide both sides by 7:
x = 17
The answer is B. 17