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In this activity, students will compare ratios with different denominators, and then with common denominators. They will also find unit rates.
Students will find discounts and sale prices for items selling at 20% off and 40% off by using tables. They will then find the general rules, using a variable, for finding those discounts and prices.
First, students will create a table showing the discount and sale price for the 20% off sale the sporting goods store is having. The calculations will initially be done on the Home screen.
Then, students will enter equations for the discount and the sale price in the Y= editor to set up a table.
Finally, students will explore the 20% off table before exploring a 40% off sale.
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