Determine whether the relation is a function.{(1, -2), (1, -4), (4, -3), (9, -1), (12, 5)}
A. Not a function
B. Function
Answer: A
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Solve.The number B (measured in thousands) of a certain type of endangered bird can be approximated by the equation B = 1.66x2 + 3.2x + 6.87, where x is the number of years after 1998. How many birds does the equation predict there will be in the year 2008?
A. 176,070 birds B. 198,000 birds C. 55,470 birds D. 204,870 birds
State the domain of the given function.f(x) = 5x2 + 9x - 7
A. all whole numbers B. (-?, ?) C. all real numbers except 0 D. (0, ?)
Solve the problem.A drug company establishes that the most effective dose of a new drug relates to body weight as shown below. Let body weight be the independent variable and drug dosage be the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the most effective dosage for a person weighing 140 pounds? 
A. 13.07 mg B. 14.5 mg C. 14.64 mg D. 18.74 mg
Find the area of the region bounded by the graphs of the algebraic functions.
?
?
A. 
B. 
C. 
D. 
E. 