A teacher is interested in knowing if the number of absences a student has during the semester and how well a student do

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A teacher is interested in knowing if the number of absences a
student has during the semester and how well a student does on the
test are correlated. At the end of the year, the teacher
collects absence rates and test grades for a random sample of
eight students. The data are as follows:
The r-value (test statistic) for the data above is -0.96. Set
alpha to .05
a. How many degrees of freedom should be used to perform
this correlation test? Answer
b. Is this a one- or two-tailed
test? Answer
c. What is the critical value
(just specify the number to all three
decimals, do not include + or -)? Answer
2)
Based on this scatterplot, a student with 7 absences
should get approximately what score on the
test?