Determine whether the relation represents a function. If it is a function, state the domain and range.
A. function
domain: {3, 8, 13, 18}
range: {15, 40, 65, 90}
B. function
domain:{15, 40, 65, 90}
range: {3, 8, 13, 18}
C. not a function
Answer: A
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The following table shows average rice yield, in tons per hectare, in Asia ?t years since 1980.
510152025
3.323.613.733.954.11?
Use the average rate of change to estimate the yield in 1993.00.
?
A. 4.37 tons per hectare B. 3.68 tons per hectare C. 3.75 tons per hectare D. None of the above
Determine whether the Law of Sines or the Law of Cosines should be used to begin to solve the given triangle. Do not solve the triangle. 
A. Law of Cosines B. Law of Sines
Find an equivalent equation in polar coordinates.x = 12
A. r = 12 cos ? B. r = 12 csc ? C. r = 12 sin ? D. r = 12 sec ?
Find the slope of the line containing the points (?1,1 ) and (2,?8 )
What will be an ideal response?