Answer:
The dependent variable: the total cost
The independent variable: the amount of books
If the equation is y = 8x + 200
y would be the dependent variable and x would be the independent variable
I hope this helps.
the answer is in the picture
I can use a chart by numbers them on the chart because I think 4 should be after the 3
Answer: 
Step-by-step explanation:
By the Pythagorean theorem, the unknown side has length

Therefore,

Answer:
A=556
Step-by-step explanation:
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