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# Word Problems with Quadratic Functions

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### Transcript

• 1. Word Problems Involving Quadratic Equations February 14, 2013 Word Problems involving  Quadratic Equations
• 2. Word Problems Involving Quadratic Equations February 14, 2013 The height, h, in metres, of a BMX rider t seconds after leaving a jump  can be modelled by the function, h(t) = ­4.5t2 + 8.3t + 2.1 a. What does the vertex mean in this question? Find the vertex. b. What does the y­intercept mean in this question? Find the y­ intercept.
• 3. Word Problems Involving Quadratic Equations February 14, 2013 A student club is planning a fundraising car wash. Last year they charged  \$10 per vehicle and washed 120 vehicles. They would like to earn more  money this year. For every \$1 increase in price, they know they will wash  5 fewer vehicles. a.) Write a quadratic function to model this situation. b.) Determine the best price to charge for the car wash and the      revenue expected at that price.
• 4. Word Problems Involving Quadratic Equations February 14, 2013 A sales manager wants to increase his sales revenue. Currently, he sells  his product for \$12  and sells 500 each month. His research indicates that  for every \$1 price increase, he will sell 25 fewer products. a.) Write a quadratic function to model this situation. b.) Determine the best price to charge and the revenue expected at      that price.