Solve the problem.An object is propelled vertically upward from the top of a 48-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 11.3 seconds
B. 0.3 seconds
C. 2 seconds
D. 5.5 seconds
Answer: A
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Use transformations of f(x) = 
or f(x) = 
to graph the rational function.f(x) = 
- 2
A. 
B. 
C. 
D. 
Solve.A fire fighter needs to estimate the height of a burning building. She estimates the length of her shadow to be 7
feet long and the length of the building's shadow to be 72 feet long. Find the height of the building if the fire fighter is 5 feet tall.
A. 120 ft B. 108 ft C. 79.5 ft D. 48 ft
Solve the problem.The viewing angle for a camera is given (in degrees) by 
where x is the focal length of the lens. The focal length on most adjustable cameras is marked in millimeters on the lense mount. Find the viewing angle, in degrees, if the focal length is 120 millimeters.
A. 164.8° B. 106.3° C. 15.2° D. 7.6°
Solve the problem.An airplane is cruising at an altitude of 28,901 feet. Express this distance to the nearest hundred meters.
A. 8800 m B. 95,400 m C. 46,200 m D. 18,100 m