Question 1055848: Jackson’s scores on the first four algebra quizzes are 77, 89, 93, and 74. What score must he earn on the fifth quiz to earn an average quiz score of 85? Please set up and solve this problem following the steps below:
a) Define the unknown quantity in terms of one variable.
b) Translate the question into an equation.
c) Solve the equation, showing all work.
d) Write a complete answer to the question asked.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Jackson’s scores on the first four algebra quizzes are 77, 89, 93, and 74. What score must he earn on the fifth quiz to earn an average quiz score of 85? Please set up and solve this problem following the steps below:
a) Define the unknown quantity in terms of one variable.
Let 5th quiz score be "x"
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b) Translate the question into an equation.
(77+89+93+74+x)/5 = 85
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c) Solve the equation, showing all work.
(333+x) = 425
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d) Write a complete answer to the question asked.
x = 425-333 = 92
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Cheers,
Stan H.
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