Answer:
C
Step-by-step explanation:
Answer:
D. x = 7 and x = 14
Step-by-step explanation:
this is a quadratic equation, so use the quadratic formula: (-b+-√b^2-4ac) / 2a for ax^2+bx+c=0
Perpendicular = Negative Reciprocal
-3 --> -1/3 ---> 1/3
Therefore it is C