Solve the problem.An object is launched vertically in the air at 40 feet per second from a platform 50 feet above the ground. The height of the object above the ground (in feet) t seconds after launch is given by 
How long does it take the object to reach its maximum height? What is the object's maximum height?
A. 2.5 sec; 75 ft
B. 1.25 sec; 50 ft
C. 2.5 sec; 50 ft
D. 1.25 sec; 75 ft
Answer: D
Mathematics
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Find an equation of the line tangent to the given curve at the point (a, f(a)). f(x) = -3e4x , a = 0
A. y = 12x + 3 B. y = 3x + 3 C. y = -12x - 3 D. y = -3x - 3
Mathematics
Solve the quadratic equation and express all nonreal complex solutions in terms of i.x2 + x + 2 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality graphically. Give the solution in interval notation.Use the intersection method to solve -11x - 8 ? -12x - 6.
A. (-?, 2] B. [2, ?) C. (-?, -11) D. (-11, ?)
Mathematics
Solve.A picture frame has a perimeter of 52 in. and a diagonal of 
in. What are the dimensions?
A. 8 in. by 19 in. B. 8 in. by 20 in. C. 7 in. by 18 in. D. 7 in. by 19 in.
Mathematics