Situation #1: Parking Garage Cost

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1 At the North parking garage it costs $5 to bring your car into the garage plus $2 for every hour the car is parked. Situation #1: Parking Garage Cost Hours Charge

2 Situation #2: Monthly Cell Phone Bill Cost = $0.10 * (number of texts) + $50 Number of Texts 0 Charge

3 Situation #3: Tree Growth vs. Years Year 0 8 Tree Height in Feet

4 Situation #4: Miles Traveled vs. Hours Hours Miles Traveled

5 Mario s plumbing service Charges $40 to make a house Call plus $25 an hour. Situation #5: Plumbing Repair Costs Hours Charge

6 Situation #6: Gas Cost vs. Gallons Cost = $3.50 x Number of Gallons Gallons of Gas Cost

7 Situation #7: Pumpkin Weights Pumpkins 0 0 Weight in Pounds

8 Situation #8: Miles per Gallon Miles Driven Gallons of Gas used

9 Attendance 0 Situation #9: Hot Dog Sales Description At the football game they expect That for every 4 people who attend The game the concession stand Will sell 3 hot dogs. Hot Dogs Sold

10 Situation #10: Temperature Scale Conversion Description Fahrenheit = (1.8 x Celsius) + 32 Degrees Celsius Degrees Fahrenheit

11 Situation #11: Currency Conversion US Dollars Euros

12 Situation #12: Circle Circumference Diameter Circumference

13 ANSWER KEY

14 Situation #1: Parking Garage Cost - Answer Key At the North parking garage it costs $5 to bring your car into the garage plus $2 for every hour the car is parked. Cost = $2 x Hours + $5 Hours Charge

15 Situation #2: Monthly Cell Phone Bill Answer Key My monthly cell phone bill is a Fixed charge of $50 plus 10 cents for every Text I send or receive. Cost = $0.10 * (number of texts) + $50 Number of Texts 0 50 Charge

16 Situation #3: Tree Growth vs. Year Answer Key The tree in my yard was 8 feet tall when it was planted And it grows 1 foot each year. Height = Years x Year 0 8 Tree Height in Feet

17 Situation #4: Miles Traveled vs. Hours Answer Key I drove at the rate of 50 miles per hour Hours 0 0 Miles Traveled Miles = 50 x Hours

18 Situation #5: Plumbing Repair Costs Answer Key Mario s plumbing service Charges $40 to make a house Call plus $25 an hour. Cost = $25 x Hours + $40 Hours Charge

19 Situation #6: Gas Cost vs. Gallons Answer Key Gas costs $3.50 per gallon Cost = $3.50 x Number of Gallons Gallons of Gas Cost ($)

20 Situation #7: Pumpkin Weights Answer Key Each pumpkin weighs 1 and 3/5 pounds. Weight = # Pumpkins x 1.60 Pumpkins 0 0 Weight in Pounds

21 Situation #8: Miles per Gallon Answer Key My car uses 1 gallon Of gas for every 25 Miles I drive Miles Driven Gallons of Gas used 0 0 Gallons = Miles Driven

22 At the football game they expect That for every 4 people who attend The game the concession stand Will sell 3 hot dogs. Situation #9: Hot Dog Sales Answer Key Hot Dogs Sold = Attendance x 0.75 Attendance 0 0 Hot Dogs Sold

23 Degrees Celsius Description To convert from degrees Celsius to degrees Fahrenheit multiply by 1.80 Then add Situation #10: Temp Scale Conversion Answer Key Degrees Fahrenheit Fahrenheit = (1.8 x Celsius) + 32

24 Situation #11: Currency Conversion Answer Key To convert from dollars to Euros, multiply dollars by 1.20 US Dollars Euros Euros = Dollars x

25 Diameter Description The circumference of a Circle is equal to its Diameter multiplied by 3.14 (π) Circumference Situation #12: Circle Circumference Answer Key Circumference = Diameter x 3.14

Chapter 2: Approaches to Problem Solving Lecture notes Math 1030 Section A

Chapter 2: Approaches to Problem Solving Lecture notes Math 1030 Section A Section A.1: You Can t Add Apples and Oranges Definition of units The units of a quantity describe what is measured or counted. We cannot add or subtract numbers with different units, but we can multiply