Solve the problem.A ball is thrown vertically upward from the top of a building 144 feet tall with an initial velocity of 128 feet per second. The distance, s (in feet), of the ball from the ground after t seconds is 
After how many seconds does the ball strike the ground?
A. 8
B. 9
C. 145
D. 11
Answer: B
Mathematics
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Find parametric equations for the line described below.The line through the point P(-1, 0, 1) and parallel to the line x = 4t + 1, 
A. x = 4t - 1, y = 4t, z = 2t + 1 B. x = 4 + 1, y = 4t, z = 2t - 1 C. x = -1, y = 2t, z = -4t + 1 D. x = 4t - 1, y = -4t, z = 1
Mathematics
Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = -3yi - 5xj - 2z3k ; C: the portion of the plane 8x + 8y + 3z = 8 in the first quadrant
A. -2 B. - 1 C. 1 D. 0
Mathematics
Graph the system of inequalities.2x + 3y ? 6x- y ? 3y ? 2 
A. 
B. 
C. 
D. 
Mathematics
Find the quadratic function y = f(x) that has the given vertex and whose graph passes through the given point.(-3, -3)
A. y = 3x2
B. y = - 3x2
C. y = 
x2
D. y = - 
x2
Mathematics