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Mathematics 15 Online
OpenStudy (anonymous):

Vinh needs 420 points to have a B average in Math. His scores so far are 88, 89, 79, and 77. What is the minimum score he can make on the next test to maintain the B?

OpenStudy (anonymous):

Do you know how to take out averages?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Then what exctly is your doubt here?

OpenStudy (anonymous):

ill do it myself then

OpenStudy (anonymous):

Here, Sum of scores so far + unknown score/5 is greater than or equal to 420 ..

OpenStudy (anonymous):

thank you(:

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