Use a proportion to solve the problem.The ratio of the width to the length of a picture frame is 8 to 13. If the width of the frame is 9 inches, what is its length?
A. 5.5 inches
B. 22 inches
C. 17 inches
D. 14.625 inches
Answer: D
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Write the negation of the conditional. Use the fact that the negation of p ? q is p ? ~q.If she doesn't study, she won't pass her math test.
A. She studies and will pass her math test. B. She doesn't study and will pass her math test. C. She doesn't study and she won't pass her math test. D. If she doesn't study, she will pass her math test.
Solve the problem.A company determines that its cost (in dollars) of producing x machine parts is given by 
and that its revenue (in dollars) for selling x machine parts is given by 
. Write a system of inequalities that would represent the profit region for producing x machine parts. Then graph the system. 
A. C ? 0.2x2 + 2
R ? 12x - 0.2x2
B. C ? 0.2x2 + 2
R ? 12x - 0.2x2
C. C ? 0.2x2 + 2
R ? 12x - 0.2x2
D. C ? 0.2x2 + 2
R ? 12x - 0.2x2
Find the unknown length in the space figure.Find the distance d. Give an exact answer.
A. 2
B. 6
C. 2
D. 6
Find all complex solutions for the equation.
= 1 + 
A. {-12, 14} B. {12, -14} C. {-20, 14} D. ?