Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. {(5, 0)}
C. {(0, -5)}
D. {(1, -6)}
Answer: C
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Solve the problem.A ball dropped from the top of a building has a height of s = 256 - 16t2 meters after t seconds. How long does it take the ball to reach the ground? What is the ball's velocity at the moment of impact?
A. 4 sec, -128 m/sec B. 8 sec, -64 m/sec C. 4 sec, 128 m/sec D. 16 sec, -512 m/sec
Solve the problem.
Use the graph of the polynomial function f to estimate the 
and to determine whether the leading coefficient is positive or negative.
A. 2, positive B. -2, positive C. -2, negative D. 2, negative
Solve the problem.The rate of a continuous money flow is 500e0.04 dollars per year for 10 years. Find the present value if interest is earned at 7% compounded continuously.
A. $29,013.64 B. $5830.98 C. $22,497.65 D. $4319.70
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 