Liz's math test included a survey question asking how many hours students spent studying for the test. The scatter plot below sh
ows the relationship between how many hours students spent studying and their score on the test.
Which of the following is the best estimate of the average score change associated with a 1 hour increase in study time?
Which of the following is the best estimate of the average score change associated with a 1 hour increase in study time?
1 answer:
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I set this up as an inequality, 
. If you take the cubed root of 800, you get the lower bound of the side length, which is 9.2. Then I just worked my way up until I hit the first number that put me over a volume of 800. That number is 9.29, because 9.28 cubed is 799.1 (not high enough) and 9.29 cubed is 801.8. Therefore, the bounds of the sides exist within a conjunction: 
. That's the best I could come up with to help on that one. Wasn't sure if there was another method you were taught at school. I just used common sense more than any rule.