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Warm-up December 6, 2013

Warm-up December 6, 2013. A video store is selling used DVD’s for 40% off the regular price of $15. What is the sale price of the used DVD’s ? How much will you pay for each DVD if the store has a buy 5 and get an extra 5% off at the register sale?

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Warm-up December 6, 2013

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  1. Warm-upDecember 6, 2013 A video store is selling used DVD’s for 40% off the regular price of $15. What is the sale price of the used DVD’s? How much will you pay for each DVD if the store has a buy 5 and get an extra 5% off at the register sale? On Tuesday, a baker sold 132 cookies. On Wednesday, she sold 108 cookies. Find the percent of change.

  2. PERCENT CHANGE • Formula: (End – Beginning )/ Beginning • (End minus Beginning) divided by Beginning • Then change to a % • + = increase • - = decrease • From 9 to 27 • From 27 to 9

  3. Find the selling price for each item given the cost and the percent of markup. • Necklace: $30; 120% markup • Scooter: $1500; 15% markup • Tennis shoes: $80; 40% markup • Computer: $500; 30% markup • Watch: $22.50; 75% markup

  4. SIMPLE AND COMPOUND INTEREST • SIMPLE: $ * I * # of years • Dollar amount times the interest rate (as a decimal) times the number of years • COMPOUND: $ * I for year one, then new $ amount times I for year 2, then new $ amount times I for year 3, etc.

  5. Find the simple interest to the nearest cent. • $1920 at 8% for 5 years • $385 at 6% for 3 years • $1200 at 4% for 18 months • $1950 at 7% for 6 months • $4250 at 9.25% for 10 years • $2000 at 5% for six months, then $3000 at 5% for the next six months

  6. Find the total amount in each account to the nearest cent (interest compounded annually). • $2200 at 5% for 2 years • $3850 at 6% for 3 years • $4075 at 4% for 3 years • $325 at 7% for 6 years • $1000 at 3.75% for 4 years

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