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
Mathematics
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. - 
Mathematics
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)
Mathematics
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