Graph the parabola. State the vertex of the parabola.y = x2 - 2x - 9
A. vertex (1, -10)
B. vertex (-1, -10)
C. vertex (1, 8)
D. vertex (-1, -8)
Answer: A
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Let x be a number. Translate the expression into an English phrase.2x
A. 2 minus a number B. 2 times a number C. 2 divided by a number D. 2 plus a number
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. sinx cos 2x B. sin 2x C. cos 2x D. cos x sin 2x
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 36
B. 
C. 
D. 1
Find the average rate of change illustrated in the graph.
Time (in hours)
A. 2.5 miles per hour B. 25 miles per hour C. 5 miles per hour D. 0.2 miles per hour