Solve.A ping-pong ball is dropped from a height of 9 ft and always rebounds 
of the distance fallen. Find the total sum of the rebound heights of the ball.
A. 13.5 ft
B. 4.5 ft
C. 6 ft
D. 3 ft
Answer: B
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Use the Runge-Kutta method to find y-values of the solution for the given values of x and ?x, if the curve of the solution passes through the given point.
= 
; x = 0 to 0.3; ?x = 0.1; (0, 1)
A. 
B. 
C. 
D. 
Forces F1 and F2 act at the same point. Find the resultant force F and its magnitude.F1 = 2i - 2j, F2 = 6i - 13j
A. F = 4i - 19j ; 
= 19.4164878
B. F = 8i - 15j ; 
= 17
C. F = 8i + 15j ; 
= 17
D. F = 4i + 19j ; 
= 19.4164878
Provide an appropriate response.If f(x) represents the number of digital cable subscribers in a particular town and g(x) represents the number of households in the town, with x equal to the number of years from 2007, then what function represents the percent of households in the town with digital cable x years after 2007?
A. 100 
B. 100f(x)g(x)
C. (f + g)(x)
D. 100(f ? g)(x)
Solve graphically.
x - 2 ? 1 - x
A. {x|x ? 2} or [2, ?) B. {x|x > 2} or (2, ?) C. {x|x < 2} or (-?, 2) D. {x|x ? 2} or (-?, 2]