If s denotes the length of the arc of a circle of radius r subtended by a central angle ?, find the missing quantity.r = 8.8 inches, ? = 60°, s = ?
A. 9.3 in.
B. 9.4 in.
C. 9.2 in.
D. 9.5 in.
Answer: C
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A population growing at an annual rate r will triple in a time t given by the formula 
. If the growth rate remains constant and equals 8% per year, how long will it take the population of the town to triple? Round to one decimal place.
?
A. 13.7 years B. 0.9 year C. 2.1 years D. 6.2 years E. 6 years
Solve the problem.The Family Arts Center charges $22 for adults, $13 for senior citizens, and $8 for children under 12 for their live performances on Sunday afternoon. This past Sunday, the paid revenue was 
for 806 tickets sold. There were 50 more children than adults. How many children attended?
A. 428 children B. 257 children C. 297 children D. 242 children
Solve the equation for all complex solutions, giving exact forms in your solution set.7x4 + 9x3 - 26x2 - 36x - 8 = 0
A. 
B. 
C. 
D. 
Find the indicated matrix.Let A = [-4 2] and B = [1 0]. Find 2A + 3B.
A. [-5 4] B. [-1 2] C. [-8 4] D. [-7 4]