Given are the first three terms of a sequence that is either arithmetic or geometric. If the sequence is arithmetic, find a1 and d. If a sequence is geometric, find a1 and r.1, 
, 
, . . .
A. a1 = 1, r = 9
B. a1 = 1, r = 
C. a1 = 1, r = 2
D. a1 = 1, r = 
Answer: B
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Determine whether the integration formula is correct. 
sin-1 6x dx = 
sin-1 6x +
+ C
A. No B. Yes
Subtract.(+25) - (-4)
A. -29 B. 21 C. -21 D. 29
Solve the problem. Round results to an appropriate number of significant digits.From a balloon 1028 ft high, the angle of depression to the ranger headquarters is 45.9°. How far is the headquarters from a point on the ground directly below the balloon?
A. 996 ft B. 991 ft C. 1001 ft D. 986 ft
Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age.52?67?6352?67?5868?54?54
A. 58.8 B. 58.0 C. 58.2 D. 59.4