Choose the function that might be used as a model for the data in the scatter plot.
A. Polynomial, not quadratic
B. Logarithmic, f(x) = a + b ln x
C. Exponential, f(x) = ab-x or f(x) = P0e-kx, k > 0
D. Exponential, f(x) = abx or f(x) = P0ekx, k > 0
Answer: C
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Decide whether the statement is true or false.If the coordinates of one endpoint of a line segment are (a, b) and the coordinates of the midpoint of the segment are (p, q), then the coordinates of the other endpoint are (2p-a, 2q-b).
A. True B. False
Find the roots of the equations.(2m + 6)2 - 5(2m + 6) - 6 = 0
A. -6, 1
B. - 
, - 6
C. - 6, - 
D. - 
, 0
Find the values of x that satisfy the given condition for the function.Solve R(x) ? 0 if R(x) = 
A. (-?, -7) B. (-?, -7) ? [3, ?) C. [3, ?) D. (-7, 3]
Find the distance between the pair of points. Give an exact answer, and where appropriate, an approximation to three decimal places.(0, 0) and (a, b)
A. 
B. a2 + b2
C. 
D. a + b