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
The profit p of a company that has spent x dollars on
advertising.
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.