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Mathematics 17 Online
OpenStudy (anonymous):

A pencil costs $p$ dollars and an eraser costs $e$ dollars. Mark buys $3$ more pencils than erasers, and he buys $7$ pencils. Write an expression that represents the amount of money that Mark spent, in dollars.

OpenStudy (dangerousjesse):

Very redundant.. Is that how it's written?

OpenStudy (anonymous):

not exactly

OpenStudy (anonymous):

A pencil costs p dollars and an eraser costs e dollars. Mark buys 3 more pencils than erasers, and he buys 7 pencils. Write an expression that represents the amount of money that Mark spent, in dollars.

OpenStudy (dangerousjesse):

Oh wait okay

OpenStudy (dangerousjesse):

\[7p+4e\]

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