Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.2 hr
B. 1.8 hr
C. 2.5 hr
D. 5 hr
Answer: A
Mathematics
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Evaluate the improper integral.
A. 90 B. 120 C. 180 D. 150
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Solve the system by graphing. 3x + 2y = 5-6x - 4y = 5
A. No solution B. (-1.5, -1) C. (1, 1) D. (1.5, -1)
Mathematics
Solve the problem.There are 12 members on a board of directors. If they must form a subcommittee of 5 members, how many different subcommittees are possible?
A. 120 B. 248,832 C. 95,040 D. 792
Mathematics
Write the phrase as a mathematical expression. Use x to represent the number. Combine like terms if possible.2 times a number added to -6, added to 9 times the sum of 8 times the number 
A. 9(8x + 7) + [2x + (-6)]; 74x + 57 B. 2x - 6 + 9(8 + 7x); 65x + 74 C. 2(-6 + x) + 9(8x + 7); 74x - 5 D. 2(-6 + x) + 9(8 + 7x); 9x + 60
Mathematics