Answer:
ar ΔBDC=6 
ar ΔABD=8 
ar ΔABC=14 
Explanation:
Please take a look of attach figure.
We are given area of triangle ar ΔCDE=5 
ar ΔCDE=
------------(1)
ar ΔBDE=
------------(2)
Divide eq(2) by eq(1) and we get,


So, ar ΔBDE=1 
ar ΔBDC=ar ΔBDE+ ar ΔCDE
ar ΔBDC=1+5 = 6 
Similarly,


ar ΔABD=8 
ar ΔABC=ar ΔABD + ar ΔBDC
ar ΔABC=8+6 = 14 
Answer: 168 sq. in.
Step-by-step explanation: the shape is a cubiod the volume is lbh=3*7*8=168
20+0.50x
20 dollar fee, 0.50 per text, x represents an unknown number