Answer:
91
Step-by-step explanation:
155-16s²
155- 16x2²
155- 16x4
155-64
91
The positive trend among the homework scores and the test scores would reveal that if a student does well in homework, he is likely to do well in exams. This can be explained in the sense that the homework will serve as the practice for the student before finally taking the exam.
I believe the fourth one is the answer.
Answer:(5,-10)
Step-by-step explanation:
