Answer:

Step-by-step explanation:
we know that
![\°C=\frac{5}{9}[\°F-32]](https://tex.z-dn.net/?f=%5C%C2%B0C%3D%5Cfrac%7B5%7D%7B9%7D%5B%5C%C2%B0F-32%5D)
For 
substitute in the formula and solve for F
![94=\frac{5}{9}[F-32]](https://tex.z-dn.net/?f=94%3D%5Cfrac%7B5%7D%7B9%7D%5BF-32%5D)
![(\frac{9}{5})*94=[F-32]](https://tex.z-dn.net/?f=%28%5Cfrac%7B9%7D%7B5%7D%29%2A94%3D%5BF-32%5D)


A, because n is having 19 taken from it
Just look up how many hours are there In a year
Let's call this unknown number, x.
So we know that 4 and this number, x, are going to be added together and 6 is going to be subtracted from it. Therefore we can write the expression:

Since we cannot proceed any further without knowing either the value of x or what the expression equals, this is as simplified as it can be.
Answer:
18
Step-by-step explanation:
Do you see a pattern? Each time it decreased by 3. 33-3=30, 30-3=27, the pattern goes on, just do the same with the last shown number. 21-3=18