Question 1133371
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Erica has scored 94 
94
, 89 
89
, and 76 
76
on the first three. 
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Say like this:
Erica has scored 94, 89, and 76 on the first three.


Her average of FOUR scores if #4 is score x, would be    {{{(x+94+89+76)/4}}}.


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{{{(x+259)/4}}}


Grade for C is  between 70 and 79 inclusive.
{{{70<=(x+259)/4<=79}}}

{{{280<=x+259<=316}}}


{{{280-259<=x<=316-259}}}


{{{highlight(21<=x<=57)}}}


Would this make sense for the minimum score?
{{{(94+89+76+21)/4=70}}}
Okay