what does sam need to score on the fourth test to ensure that she will have an average of90% for all four tests?
1 answer:
Answer: 98%
Step-by-step explanation:
83%+91%+88%+?=90×4
262+?=360
?=360-262
?=98%
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Ihope this helps you:)
Hello,
Please, see the attached files.
Thanks.
M = 0.5
y – 7 = 0.5 ( x – 4 )
y = 0.5x + 5
