State an explicit rule for the nth term of the recursively-defined sequence.an = an-1 - 9; a1 = 5
A. an = 9 - 5(n-1)
B. an = 9 - 5(n)
C. an = 5 - 9(n)
D. an = 5 - 9(n-1)
Answer: D
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Write the quadratic equation in standard form. Determine the values of a, b, and c.2x (x - 9) = (x + 7) (x - 5)
A. - x2 + 20x - 35 = 0 a = -1, b = 20, c = -35 B. x2 - 20x = 35 a = 1, b = -20, c = 35 C. - x2 + 20x = -35 a = -1, b = 20, c = -35 D. x2 - 20x + 35 = 0 a = 1, b = -20, c = 35
The first step in the problem-solving procedure is not choosing a variable, but rather translating the main idea into symbols. ? If you subtract fifteen from twice a number, the result is three. What is the number? ?
A. 9 B. -6 C. 6 D. -9 E. -13.5
Find the intervals over which the given function is increasing, is decreasing, or is constant.f(x) = -5x2 - 1
A. increasing on (-?, 0); decreasing on (0, ?) B. decreasing on (-?, 0); increasing on (0, ?) C. decreasing on (-1/5, ?) D. increasing on (-?, -1/5)
Convert the angle from radians to degrees. Express your answer as a decimal rounded to two decimal places.8.14
A. 0.14° B. 0.07° C. 466.39° D. 467.48°