To find the equation of a regression line, ý = ax + b, you need these formulas:
1 answer:
Answer:-4.683
Step-by-step explanation:
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Answer: 11.4
Step-by-step explanation:
change to numbers 
simplify 
The last one since it contains only fractions
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Isosceles triangle because there are 2 angles that's the same.
If you multiply the 9 in the 900 by 5 you get 45 which is 5% of 900, multiply that by 4 gives 180 so she should have $180