Answer:
the data shows a linear relationship because the rate of change in decreasing
Step-by-step explanation:
hope it helps
Answer: I put a photo of what I did
Answer:

The beginning balance of Sophie's account is 75
Step-by-step explanation:
Using the slope intercept form aka 
The slope of a line describes how steep a line is.
- We can see that the y-axis goes up by 25.
- 25, 50, 75, 100, 125, 150 etc
<u>$ is how much you have in your bank account.</u>
<em>We can see that Sophie starts off with 75 dollars.</em>
In the first week, we see that Sophie has 100 dollars. In the second week, we see that Sophie has 125.
<h3>how to find the slope</h3>

The first week (1, 100)
The second week (2,125)

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Since we are dealing with a radical then x - 5 ≥ 0, for real values
x = 4 is less than 5 , hence is not in the domain