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# Becky is buying w wrenches $4.95 each and b bolts at$0.30 each. How do you write an expression for the amount Becky will pay?

Mar 22, 2018

Multiply the number of items $w$ and $b$ by the price of each item to get

$4.95 w + .30 b$

#### Explanation:

$w$ and $b$ represent the number of wrenches and bolts purchased, so you want to multiply each variable times the price of that particular item. For example, the cost of $w$ wrenches is

$4.95 \cdot w$

and the cost of $b$ bolts is $.30 \cdot b$

Put this together to get

$4.95 w + .30 b$

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