SOLUTION: Your last quiz grades were 85, 76, 94 And 100. Set up and solve an equation to find the lowest quiz grade you can get in your next quiz and have an average of at least 90.
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-> SOLUTION: Your last quiz grades were 85, 76, 94 And 100. Set up and solve an equation to find the lowest quiz grade you can get in your next quiz and have an average of at least 90.
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Question 838426: Your last quiz grades were 85, 76, 94 And 100. Set up and solve an equation to find the lowest quiz grade you can get in your next quiz and have an average of at least 90.
How do I complete this? I understand adding them up and dividing by the number of numbers added but I don't understand this word problem. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Your last quiz grades were 85, 76, 94 And 100.
Set up and solve an equation to find the lowest quiz grade you can get in your next quiz and have an average of at least 90.
:
Let x = the grade you need in the 5th test => 90
multiply both sides by 5, add up the values
335 + x => 450
x => 450 - 355
x => 95 (You must get 95 or greater in the 5th test)
