Standard 7 RP A 1

Learning Targets

R1: I can use proportional reasoning to solve multistep ratio and percent problems. 

R2: I can solve real-world problems involving proportional relationships represented by graphs and equations. 

R3: I can solve real-world problems involving proportional relationships.

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· Rate – is talking about a percent (%).

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· Sales Tax – It is the amount our government charges us to buy an item.

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· TOTAL COST – It is the cost of an item at its regular price plus the sales tax

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Method 1: Total Cost p + 0.07(p)

The sales tax is 7%. Find the total cost of a keyboard that sells for $59.99.

Step 1: Calculate Tax Amount

​Convert percent to decimal, Multiply cost of item by percent to get tax, round to nearest cent

Step 2: Add the tax amount to get total cost

Add the tax amount​ to the regular cost, round if necessary

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Method 2: p • 1.07

Same Problem: The sales tax is 7%. Find the total cost of a keyboard that sells for $59.99

*Quicker Method

Add the 7% tax rate to 100% and Turn it to a decimal -> Multiply​

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Vocabulary

· Tip or Gratuity – It is a small amount of money in return for a service.​

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· Total Price – It is the regular price of the service plus tip.

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· Markup – A store sells items for more than it pays for those items. The amount of increase is called the markup.

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· Selling Price – It is the amount the customer pays for an item

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