Question 946854
Depends on what percentage that test is as part of the entire grade.
Assume it's X percent.
Then,
{{{G=84(1-X)+75*X}}}
So if it's 10% of your grade,
{{{G=84(1-10/100)+75(10/100)}}}
{{{G=75.6+7.5}}}
{{{G=83.1}}}