Find anand a6 for the following arithmetic sequence.1, 4, 7, 10, 13
A. an = n + 3; a6 = 9
B. an = 2n - 3; a6 = 9
C. an = 3n - 2; a6 = 16
D. an = 1(3)n-1; a6 = 243
Answer: C
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Determine the domain and range of the function.
A. domain: (-?, 1) ? (1, ?); range: (-?, 2) ? (2, ?) B. domain: (-?, 1]; range: (-?, 2] C. domain: (-?, ?); range: (-?, 2] D. domain: (-?, ?); range: (-?, ?)
Find the common ratio.
, 
, 
, 
, . . .
A. 
B. 5
C. 
D. 
Solve the problem.When making a telephone call using a calling card, a call lasting 3 minutes cost $0.65. A call lasting 11 minutes cost $1.45. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of a making a call lasting x minutes.
A. y = 10x - 
B. y = -0.1x + 0.95
C. y = 0.1x - 9.55
D. y = 0.1x + 0.35
Graph the specified rational numbers. Estimate as needed.
A. 
B. 
C. 
D. 