SOLUTION: I need help please on the following: To remain on financial aid, Millie needs to complete an average of at least 7 credits per quarter each year. In the first three quarters of 200

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Question 28038: I need help please on the following: To remain on financial aid, Millie needs to complete an average of at least 7 credits per quarter each year. In the first three quarters of 2001, Millie completed 5, 7, and 8 credits. How many credits of course work must Millie complete in the fourth quarter if she is to remain on financial aid?
I appreciate any assistance. Thank you so much.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let "x" be the number of credits she need in the 4th quarter:
Then [5+7+8+x]/4 must be 7
[19+x]/4 =7
19+x=28
x=9
She need 9 credits in the 4th quarter.