Solve the problem.On our moon, the acceleration of gravity is 1.6 m/sec2. If a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 45 seconds later?
A. -72 m/sec
B. 3240 m/sec
C. -36 m/sec
D. 72 m/sec
Answer: A
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Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 - x + 
= 0
A. 0.5, 2.5 B. 0.382, 2.618 C. 2.5 D. -0.303, 3.303
Perform the indicated operation for the given f(x) and g(x).f(x) = x2 - 9x - 1, g(x) = 
Find (f ? g)(x).
A. x2 - 9x
B. 
C. x - 9
+ 25
D. x - 9
- 1
Write the quadratic equation in standard form. Determine the values of a, b, and c.5x2 - 3x = 0
A. -3x + 5x2 = 0 a = -3, b = 5, c = 0 B. 5x2 - 3x = 0 a = 5, b = -3, c = 0 C. 5x2 = 3x a = 5, b = 3, c = 0 D. 5x2 - 3x = 0 a = 5, b = 0, c = -3
Solve the system of equations. If the system is dependent, express solutions in terms of the parameter z. x + y + z = -7 x - y + 4z = -95x + y + z = -19
A. (-2, -2, -3) B. (-3, -2, -2) C. No solution D. (-2, -3, -2)