4) Ty runs his own landscaping business. He earns $\mathrm{\$}30$ per hour pulling weeds, $\mathrm{\$}25$ per hour raking leaves, and $\mathrm{\$}20$ per hour cutting the grass. Ty wants to know how much he earns each week.
4) Which expression represents the total amount Ty earns for $p$ hours pulling weeds, $r$ hours raking leaves, and $c$ hours cutting the grass?
$$30p\cdot 25r\cdot 20c30p-25r-20c30p+25r+20c30+25+20$$

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