Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 27 s
B. 9 s
C. 18 s
D. 36 s
Answer: C
Mathematics
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Graph the function to find the stated characteristic of the graph.Graph f(t) = - 3cos (2(t - 
)) in 
by 
. State the period.
A. 2?
B. - 
C. ?
D. 
Mathematics
Factor out the greatest common factor. Be sure that the coefficient of the term of highest degree is positive.32x4y + 28xy3
A. xy(32x3 + 28y2) B. 4xy(8x3 + 7y2) C. 4x(8x3y + 7y3) D. 4y(8x4 + 7xy2)
Mathematics
Find the equation, in the form 
, of the circle passing through the given points.
?
, 
, and 
?
A. ?
B. ?
C. ?
D. 
E. none of these
Mathematics
Find the axis of symmetry of the parabola defined by the given quadratic function.f(x) = 2x2 - 4x + 5
A. x = -1 B. x = 3 C. x = 1 D. x = 2
Mathematics