APP: /20 Name: Unit 1: Quadratic Functions Application Task (a) Give an example of a parabola written in factored form with 2 integer zeros and showing a vertical stretch by a factor of 3. (1 mark) (b) Re-write your parabola in standard form (1 mark) (c) Re-write your parabola in vertex form (2 marks) (d) Determine the following key features for your parabola: (3 marks) Vertex: Axis of Symmetry: Minimum value: Zeros: y-intercept: Range: 2. A rectangular supermarket 90 m by 60 m is to be built on a city block having an area of 9000 m2. There is to be uniform strip around the building for parking. How wide is the strip? (5 marks) Let represent 3. The student council sells sweatshirts to raise funds. The students sell 500 sweatshirts a year at $45 each. They are planning to decrease the price to generate more sales. An informal survey was taken showing that for every $1 decrease in price they can expect to sell an additional 20 sweatshirts (a) What price would maximize revenue from sweatshirt sales? (5 marks) (b) What would be the maximum revenue generated at this new price? (1 mark) (c) How many sweatshirts must be sold to reach this maximum revenue? (1 mark) (d) Is it possible for the revenue to be equal to zero? Show algebraically. (1 mark)