I would need to have the same book and go to page 73 to be able to answer it. By the way, do you have any friends that have the answer?
Unknown answer, not enough info.
Answer:
x = 5 unit
Step-by-step explanation:
The given figure represent the theorem of circle,
It two chords of circle intersect outside or inside when produce, then
AP × PB = DP × PC
SO , from given data we can find the X
Now, (X + 4) × 4 = (9 + 3) × 3
Or, X + 4 = 
Or, X + 4 = 
Or, X = 9 - 4
∴ X = 5 unit
3/4t=14
t=56/3
hope this helps!