Write the first five terms of the arithmetic sequence with the first term a1 and common difference d. a1 = 12, d = -6
A. 12, 18, 24, 30, 36
B. -12, -18, -24, -30, -36
C. 1, 12, 18, 24, 30
D. 12, 6, 0, -6, -12
Answer: D
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Solve.A rotating beacon is located a distance d from a long wall. The distance d is given by 
, where t is the time measured in seconds since the beacon started rotating. Solve the equation for t.
A. t = 
arctan 
B. t = 2? arctan 
C. t = 2? tan 
D. t = 
tan 
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
(log6 x + log6 y)
A. 
B. log6 
C. log6 
D. log6 
+ log6 
Solve by any method.1 - 
- 
= 0
A. {9, 5} B. {-9, -5} C. {-9, 5} D. {9, -5}
Find the probability.A digit is chosen randomly from the digits 0 through 9 and then 7 is added to the digit and the sum recorded. Find the probability that the sum is less than 9.
A. 
B. 
C. 
D. 