Solve the problem.Find the nth term of the following arithmetic sequence:? + 0.5, ? + 5.5, ? + 10.5, . . .
A. 5n + ? - 4.5
B. 5n + n? + 0.5
C. 5n + ? + 0.5
D. 5n + (n - 1)? - 4.5
Answer: A
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Use a graphing calculator to solve the equation. Round to two decimal places.
= 5
A. 1.6 B. -1.6 C. -2.4 D. 2.4
Add or subtract as indicated.(6x 3 + 9x 2 + 4x - 4) + (7x 3 - 5x 2 - 7x + 5)
A. 13x3 + 4x2 - 3x + 1 B. -9x3 - 9x2 + 11x + 16 C. 13x3 + 4x2 - 3x - 1 D. 14x6 + 1
Solve.The cost C of double-dipped chocolate pretzel O's varies directly with the number of pounds of pretzels purchased, P. If the cost is 
when 7.9 pounds are purchased, find a linear function that relates the cost C to the number of pounds of pretzels purchased P. Then find the cost C when 4.7 pounds are purchased.
A. C(P) = 
; $136.18
B. C(P) = 0.098P; $0.46
C. C(P) = 17.238P; $136.18
D. C(P) = 10.256P; $48.20
Solve the problem.The top and base of a window are respectively 14 ft and 3 ft above the level of an observer's eyes. At what distance from the wall must the observer stand in order to make the angle subtended by the window equal to the angle of elevation of its base? Round to the nearest whole unit.
A. 10 ft B. 8 ft C. 6 ft D. 4 ft