Answer:

Step-by-step explanation:

The original price is @42. To check, find 10% of $42, which is $4.2. Now just subtract $4.2 from the original price, $42, and you get $37.8
Answer:
Regression lines can be used to predict values within the given set of data, but should not be used to make predictions for values outside the set of data. The correlation coefficient r measures the strength of the linear association between x and y.
Step-by-step explanation:
sss similarity theorem
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Answer:awnser c
Step-by-step explanation:because they are accros from eachother