Determine if the sequence is arithmetic. If the sequence is arithmetic, find the common difference.3, 9, 27, 81, 243, . . .
A. yes, 9
B. yes, 
C. yes, 3
D. no
Answer: D
Mathematics
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Solve the problem.The charge for renting a video is $2 plus $4 per day of renting. Give an expression for the cost C of renting a video for n days.
A. C = 2n + 4n B. C = 2n C. C = 4n D. C = 2 + 4n
Mathematics
Solve the problem. Snell's Law states that 
Use this law to find the requested value. If 
find 
Round your answer to the nearest degree.
A. ?1 = 53° B. ?1 = 51° C. ?1 = 48° D. ?1 = 50°
Mathematics
Use the LCD to simplify and solve.
x - 
x = 6
A. 60 B. -60 C. -120 D. 120
Mathematics
Solve the application.With each turn, a nut moves 
inch on a bolt. How many turns will it take for the nut to move 
inch?
A. 9 turns
B. 10 turns
C. 
turns
D. 225 turns
Mathematics