Total of area of faces so (20*6+20*4+4*6)*2=448 cm ^2
You are moving in the path of a parabola.
The conic section is parabolic - the street is the directrix and the mailbox is the focus.
Answer:

Step-by-step explanation:

Subtract 1 from both sides:


Divide both sides by -7:


Answer:
0
Step-by-step explanation:
-3c-11+14c=-14c-11
+14c
-3c-11+28c = -11
+11
-3c+28c = 0
25c=0
divide both sides by 25
c=0