Solve the problem.An explosion causes debris to rise vertically with an initial velocity of 112 feet per second. The function 
describes the height of the debris above the ground, s(t), in feet, t seconds after the explosion. What is the instantaneous speed of the debris when it hits the ground?
A. 112
B. -224
C. -112
D. 224
Answer: C
Mathematics
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Multiply.(5x2 + 4x + 2)(x2 + 2x + 3)
A. 5x4 + 10x3 + 25x2 + 16x + 6 B. 5x4 + 14x3 + 25x2 + 16x + 6 C. 5x4 + 10x3 + 23x2 + 16x + 6 D. 5x4 + 14x3 + 23x2 + 16x + 6
Mathematics
Find the root.
A. 4.264 B. 9 C. 3 D. Not real number
Mathematics
Solve the problem.A child on a swing sweeps out a distance of 20 ft on the first pass. If she is allowed to continue swinging until she stops, and if on each pass she sweeps out a distance 
of the previous pass, how far does the child travel?
A. 26.67 ft B. 46.67 ft C. 13.34 ft D. 6.67 ft
Mathematics
Determine whether the pair of lines is parallel, perpendicular, or neither. 3x - 2y = -19 2x + 3y = -19
A. Parallel B. Perpendicular C. Neither
Mathematics