Answer:

Step-by-step explanation:
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Answer:
170
Step-by-step explanation:
your welcome np 8 hope you appreciate it
3x92 = 276 (first 3 exams)
average of at least 90 (90 x 4 = 360)
360 - 276 = 84
Answer
<span>she needs to score at least 84 on the fourth exam </span><span>in order to guarantee a final average of at least 90</span>
Answer: f (
1
−
x
)
=
3
x
2
−
6
x
+
4
Your WElcome