Find a formula for the nth term of the sequence.6, 7, 8, 9, 10 (integers beginning with 6)
A. an = n + 6
B. an = n + 7
C. an = n - 6
D. an = n + 5
Answer: D
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Three players (one divider and two choosers) are going to divide a cake fairly using the lone divider method. The divider cuts the cake into three slices (s1, s2, and s3).Suppose the choosers value the slices as follows:
Which of the following is a fair division of the cake?
A. Chooser 1 gets s3; Chooser 2 gets s2; Divider gets s1. B. Chooser 1 gets s2; Chooser 2 gets s1; Divider gets s3. C. Chooser 1 gets s2; Chooser 2 gets s3; Divider gets s1. D. Chooser 1 gets s1; Chooser 2 gets s2; Divider gets s3. E. none of these
Use the reference angle to find the exact value of the expression. Do not use a calculator.tan 
A. 
B. -
C. 
D. 
Find the exact value of the expression.cos 10° cos 50° - sin 10° sin 50°
A. 
B. 
C. 
D. 
Find an equation for the parabola described.Vertex at (-1, -2); directrix y = -5
A. y = 
(x + 1)2 - 2
B. x = 
(y + 2)2 - 1
C. y = 
(x + 2)2 - 1
D. x = 
(y + 1)2 - 2