Find a general term an for the arithmetic sequence.a4 = 50, a18 = -20
A. an = -5n + 65
B. an = -4n + 70
C. an = 5n + 72
D. an = -5n + 70
Answer: D
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Solve the problem.In 1996, an outbreak of a disease infected 14 people in a large community. By 1997, the number of those infected had grown to 33. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 14e0.857t, where t is the number of years after 1997. B. N(t) = 14e8.57t, where t is the number of years after 1996. C. N(t) = 14e0.857t, where t is the number of years after 1996. D. N(t) = 14e8.57t, where t is the number of years after 1997.
Determine the degree and the coefficient of the monomial.-18x
A. Degree 0, coefficient -1 B. Degree 0, coefficient 0 C. Degree 1, coefficient -18 D. Degree -18, coefficient 8
Rewrite the equation in a rotated x'y'-system without an x'y' term. Express the equation involving x' and y' in the standard form of a conic section.17x2 - 12xy + 8y2 - 68x + 24y -12 = 0
A. 
+ 
= 1
B. x'2 = -16y'
C. 
- 
= 1
D. 
+ 
= 1
Answer the question.Find f + g, where f(x) = 5x + 6 and g(x) = -7x + 9.
A. 11x + 2 B. -2x + 15 C. 13x D. 12x + 15