First lets remove the initial fee
150 is how much she is charging you per hour.
If each hour is 55, lets divide 150 by 55.
She charged you for 2.7 hours (almost 3) of service
Answer:
Step-by-step explanation:
Given
Required
Determine 
In functions;
So, we have:
Substitute values for R(x) and C(x)
Open bracket
Collect Like Terms
Answer: 48/25
Step-by-step explanation:
Answer:
11/24
Step-by-step explanation:
find the lcm of 8 and 6, which is the denominator. the lcm is 24, so you make the denominator 24. then you get 32/24 - 21/24. then you do 32-21 which is 11, then you get 11/24
please add a thanks if im correct
Always get rid of denominators first. Multiply both right and left side by 6
-7 (6) = -c (6)/6 + 12(6)
-42 = -c + 72
c = 72 +42
c = 114
rearrange like terms together
42 = 18 - 4x
4x = 18 -42
4x = -24
divide both sides by 4
x = -6
