Trevor is 5 years more than half his mother’s age when he boards a train leaving Los Angeles. He is traveling south on a train numbered with a tens digit.

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Presentation transcript:

Trevor is 5 years more than half his mother’s age when he boards a train leaving Los Angeles. He is traveling south on a train numbered with a tens digit that is 4 more than twice the ones digit at the same time another train leaves San Diego heading north and carrying mixed nuts. If he needs 50 pounds of mix that is 25% cashew and the entire task takes him 20 minutes by himself, how much longer will it take if he gets help from Celina who has 40 coins and needs a box that is 7 cm longer than 3 times the width so she can invest part of the money at 6% and earn interest of $ How old is Trevor?

Put Life Into Algebra Birthday Party Silkscreen T-shirts Health Club Carnival Rides College Tuition Cell Phone Plans Text Message Plans Pay-Per-View Plans

Put life Into Algebra Mixed Nuts and Life Ways to put life into Algebra Lane County Fair Text Messages Market Night and Snow Cones Put Life Into Your Algebra Modeling Life and Meeting Standards

Ways to Put Life Into Algebra 1.Traditional Emphasis on learning skills and procedures first. Meaning is usually delayed and often avoided. 2.Flip the Order Establish meaning before learning skills and procedures. 3.Restructure Develop concepts, skills and procedures by starting with a real-life context and using a meaningful approach.

The cost for admission at the Lane County Fair is $9.00 for an adult. Ride tickets sell for $0.50 each. Each ride requires seven tickets.

Process or Arrow Diagram Equation Rides –––––––––> ––––––––> Total Cost “n” c(n) = 3.50n n represents the number of rides and c(n) represents the total cost x c(n)

Evaluating Expressions Solving Equations Rides –––––––––> ––––––––> Total Cost “15” x c(15) To find the total cost with 15 rides evaluate the expression: c(15) = 3.50(15) To find the number of rides if total cost is $100 solve the equation: 100 = 3.50n Rides <––––––––– < –––––––– Total Cost “n”100 ÷ 3.50– 9.00

Monthly Text Plans Verizon $5.00 for 250 free. $0.15 per text message Sprint/Nextel $5.00 for 300 free. $0.20 per text message

What does it all mean? Explain. Verizon C(t) = 0.15(t – 250) Sprint/Nextel C(t) = 0.20(t – 300)

Snow Cones Space Rental = $50.00 Selling Price = $2.50 Ice = $1.99 for 20 lbs. Cups = $9.00 for 200 Syrup = $6.50 per qt. Snow Cone = 12 oz. crushed ice + 2 oz. syrup

Cost vs. Revenue vs. Profit Let “n” represent the number of snow cones. Let “r(n)” represent total revenue Let “c(n)” represent total cost Let “p(n)” represent total profit Cost: c(n) = n Revenue: r(n) = 2.50n Profit: p(n) = r(n) – c(n) p(n) = 2.5n – ( n)

Modeling Life and Algebra Standards Solving linear equations (4.0) Solving multi-step equations (5.0) Graphing linear equations (6.0) Writing equations using point/slope (7.0) Solving systems of equations (9.0) Relations and functions (16.0, 19.0) Domain and range (17.0)