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. The table below gives the number of hours spent studying for a science exam and the final exam
grade.
Study hours
Grade
2
77
y=63.9274x+6.08871
y=6.08871x+.989
y=.9781x+.989
y=6.08871x+63.9274
5
92
1
70
0
63
4
90
25
75
3
84