QUADRATIC WORD PROBLEMS

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Presentation transcript:

QUADRATIC WORD PROBLEMS LESSON 7 – 4 MATH III

Parts of a Graph

Height and Velocity A goalie kicks a soccer ball in the air with an upward velocity of 65 feet per second. The ball is kicked when it is one foot off the ground.

Height and Velocity A rollercoaster takes riders straight up, and then returns straight down. The initial velocity of the coaster is 185 feet per second, and the coaster leaves from ground level.

Height and Velocity A golf ball is struck and reaches an initial velocity of 60 feet per second. The tee’s height was 3 feet above the fairway.

Height and Distance A bridge’s height is a function of the length (x) of the bridge. h(x) = -0.5x2 + 150x

Profit and Sales The profit p of a company that has spent x dollars on advertising. p(x) = -5x2 + 1000x + 5000 p(x) = -26x2 + 2600x + 10000

Area The area of the back yard, including the pool and concrete sidewalk is 120 yd2.

Area The length of a photograph is 3cm less than twice the width. It’s area is 77cm2. Find the dimensions of the photo.