Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.sin x (2 cos2 x - 1)
A. sin 2x
B. sinx cos 2x
C. cos 2x
D. cos x sin 2x
Answer: B
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Provide an appropriate response.The graph below shows the position s = f(t) of a body moving back and forth on a coordinate line. 
is the body moving away from the origin? Toward the origin? At approximately what times is the (b) velocity equal to zero? (c) Acceleration equal to zero? (d) When is the acceleration positive? Negative?
What will be an ideal response?
Answer the question.What does the digit 5 mean in the number 820,158?
A. ones B. thousands C. tens D. hundreds
Solve.The altitude above sea level of an airplane just after taking off from an airport on a high plateau is modeled by the line of best-fit Height = 1000(Time) + 3679, where the height is in feet and time is in minutes since take-off. 9 minutes after take-off, a pilot observes the altitude of the plane. If the height residual is 100, what is the altitude of the plane?
A. 12,579 feet B. 9000 feet C. 12,679 feet D. 12,779 feet
Identify the polynomial as a monomial, binomial, trinomial, or none of these. 12x2
A. Trinomial B. None of these C. Monomial D. Binomial