Solve the problem.The table lists how financial aid income cutoffs (in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the financial aid cutoff for 1985. 

A. $36,000
B. $21,000
C. $57,000
D. $18,000


Answer: A

Mathematics

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Determine whether the expression represents a number that is positive, negative, or zero.1-5

A. Zero B. Negative C. Positive

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Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.sin ? = - , ? in quadrant IV Find cos 2?.

A. - 
B.
C.
D. - 

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Find all x-intercepts of the function.f(x) = (2x - 6)2 + 2(2x - 6) - 15

A. (- , 0), (, 0)
B. (, 0), (- , 0)
C. (- , 0), (- , 0)
D. (, 0), (, 0)

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The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. Use the graph to answer the question.What temperature was recorded at 10 a.m.?

A. 75 ° F B. 74 ° F C. 71 ° F D. 73 ° F

Mathematics