Find the domain of the function.y = 
A. (-?, ?)
B. 
C. 
D. 
Answer: B
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Calculate the arc length S and area A for each of the following sectors. Round to the nearest whole number if necessary.a = 3 rad, r = 30 cm
A. S = 60 cm, A = 1350 cm2 B. S = 90 cm, A = 1350 cm2 C. S = 60 cm, A = 1300 cm2 D. S = 90 cm, A = 1360 cm2
Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.a2 = 9, a6 = 729
A. a1 = 3, r = 3 B. a1 = 9, r = 3 C. a1 = 3, r = 0.33 D. a1 = 729, r = 0.33
Solve the problem.After being struck with a hammer, a gong vibrates 21 vibrations in the first second and in each second thereafter makes 
as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.
A. 84 vibrations B. 94 vibrations C. 23 vibrations D. 28 vibrations
Solve the system by the addition method, if possible. If a solution exists, give the value of x.
?
?
A. -1 B. ?4 C. ?2 D. ?-2 E. no solution