Yes what is the four question
Answer:
Kiesha paid $12.
Step-by-step explanation:
40% of 20 is 8. So you subtract 8 from 20 and that gives you the amount she paid.
We are given: Degrees Celsius and degrees Fahrenheit are related by formula

To find : Solve formula for F in terms of C.
Solution: We have , 
First we need to get rid 9 from right denominator.
In order to get rid 9 from right denominator, we need to multiply equation both sides by 9.

9C = 5 (F-32).
Distributing 5 on right side over (F-32), we get 5*F - 5*32 = 5F - 160.
9C = 5F - 160.
Adding 160 on both sides,
9C+160 = 5F - 160+160.
9C+160 =5F
Dividing both sides by 5, we get
(9C+160)/5 =5F/5.

Splitting fraction 1/5, we get
.
I believe that is the commutative property...which basically states that u can move the numbers around and it will not change the result