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Jake and Mike took a different number of tests. Jake scored 85 points on each test. Mike's total score was 15 less than Jake's total score. The following expression shows Mike's total score: 85x − 15 In the expression, what does the variable x represent? (5 points) Select one: a. The total number of tests Mike took b. The total number of tests Jake took c. The sum of Jake's and Mike's total score d. The difference between Jake's and Mike's total score

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texaschic101
x would represent the total number of tests Jake took
In your equation 85x - 15 . . . . 

 - The 85 is the score that Jake makes each time. 
 - The x is the number of tests Jake takes. 
 - And the -15 means that you would subtract 15 from Jake's total score (85x) 
 - All this will equal your answer to the equation which is Mikes total score. 

The question is asking what does x represent. 
Therefor the answer would be B. The total number of tests Jake took

Hope this helps! :)

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