Solve the problem.A ball is thrown vertically upward at an initial speed of 
Its height (in feet) after t seconds is given by h(t) = t(48 - 16t)After how many seconds does the ball reach its maximum height?
A. 2 seconds
B. 1.5 seconds
C. 3 seconds
D. 6 seconds
Answer: B
Mathematics
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Solve the problem.How many months are there in 21 years?
A. 43 months B. 33 months C. 262 months D. 252 months
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Graph the system of linear inequalities.6y - x ? 8,-y + 3x ? 6,x ? 0
A. 
B. 
C. 
D. 
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Find the sum.7.7 + [(-8.7) + (-5.3)]
A. 21.7 B. 11.1 C. 4.3 D. -6.3
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Find the limit algebraically.
(-5x + 4)
A. -1 B. 19 C. 3 D. does not exist
Mathematics