Answer:
1 haircut = 47 dollars
1 colouring = 98 dollars
Step-by-step explanation:
Let 
be equal to the cost of 1 haircut.
Let 
be equal to the cost of 1 colouring treatment.
<u>1) Form equations</u>
Equation 1: 3 haircuts + 1 colour = 239 dollars
⇒ 
Equation 2: 2 haircuts + 1 colour = 192 dollars
⇒ 
<u>2) Solve the system of equations</u>
Subtract equation 2 from equation 1 to cancel out y (elimination)
- 
⇒ 
Therefore, Natalie charges 47 dollars for 1 haircut.
Plug x back into one of the equations to solve for y
Subtract both sides by 94
Therefore, Natalie charges 98 dollars for 1 colouring treatment.
I hope this helps!
Answer: D : interquartile range
Step-by-step explanation: I just took the test
Answer:
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Answer: Im late but do you still need the answer?
Step-by-step explanation:
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Answer:
- domain: [2, 6]
- range: [6, 18]
Step-by-step explanation:
The domain is the horizontal extent of the graph. When end points are involved, you have to be able to tell if they are included in the function definition, or not. Here, the solid dots mean both end points are included.
The graph extends horizontally from 2 to 6. You read this from the "x" scale at the bottom. As an inequality, the domain is written ...
2 ≤ x ≤ 6
In interval notation, it is [2, 6]. Square brackets are used to indicate the end point values are included.
__
The range is the vertical extent of the graph. This one extends from y=6 to y=18. You read this from the "f(x)" scale on the left. The range can be written as ...
6 ≤ y ≤ 18
[6, 18]
