Use the accompanying graph of a particle moving on a coordinate line with velocity v = f(t) in ft/sec at time t seconds. The axes are marked off at one-unit intervals. Use these terms to describe the motion state: moving forward/backward, increasing/decreasing speed, and resting. Recall that speed = 
. 
Give the interval(s) when the particle is moving backward.
A. (11, 19)
B. (8, 11) and (19, 21)
C. (8, 21)
D. (0, 8) and (21, 25)
Answer: A
Mathematics
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Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.4 ln a - 7 ln b
A. 
B. ln
11
C. ln
D. ln
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Prove 
for all natural numbers n.
?
List the steps involved.
What will be an ideal response?
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Solve the problem.Find the equation of a circle in standard form that is tangent to the line x = -3 at (-3, 5) and also tangent to the line x = 9.
A. (x + 3)2 + (y + 5)2 = 36 B. (x + 3)2 + (y - 5)2 = 36 C. (x - 3)2 + (y + 5)2 = 36 D. (x - 3)2 + (y - 5)2 = 36
Mathematics
Add or subtract as indicated.-5.143 + 4.857
A. -9.9 B. -0.286 C. -10 D. 24.980
Mathematics