Write an expression in terms of the given variable(s) that represents the indicated quantity.The amount of money in cents in a jar containing n nickels and some dimes and some quarters if there are 3 times as many dimes as nickels and twice as many quarters as dimes.
A. 85x cents
B. 175x cents
C. 110x cents
D. 185x cents
Answer: D
Mathematics
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A. (1, -1) 
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A. -9 B. 9 C. 15 D. -15
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Find the value(s) of the variable for which the rational expression is undefined.
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Mathematics