Answer:

Step-by-step explanation:
Solve for the value of
:

-Switch sides:


-Add
on both sides:


Therefore, the value of
is
.
It would drop by 24 degrees
3 x 8 = 24
For each hour another long way is simple just do
3 x 4 = 12 now just double it
12 + 12 = 24
Answer:
f(9) =21
Step-by-step explanation:
I will assume you want to find f(9) when x=9
Let x=9
f(9) = 2(9) +3
= 18+3
=21
f(9) =21
Yes that is true, all opposite sides would be parallel, and all the corners are 90 degrees, then yes it is true