To make it simple make them all the same fraction
6/24 to trim 4/24 to style and she wants to work for 80/24 hours for 5 days
if each appointment she wants to take 6/24 to trim and 4/24 to style then every appointment will take 10/24 of an hour.
she wants to do 80/24 so she can do 8 appointments a day if each take 10/24
8 appointments a day 5 days a week
8x5= 40
The answer to this question is A. 3
Divide the miles by the hours....
141/3=47
205/5=41
97/2=48.5
172/4=43
Answer: 97 miles in 2 hours
The given expression is 
We need to determine the expression as an equivalent algebraic expression involving only x.
The expression has to be expressed as an algebraic expression in x.
Thus, we have;
Using the identity 
in the above expression, we get;
Simplifying, we get;
![\cos \left(2 \cos ^{-1} x\right)=2[cos(cos^{-1}x)]^2-1](https://tex.z-dn.net/?f=%5Ccos%20%5Cleft%282%20%5Ccos%20%5E%7B-1%7D%20x%5Cright%29%3D2%5Bcos%28cos%5E%7B-1%7Dx%29%5D%5E2-1)
Hence, the expression can be written as 
The first option is correct
