Choose the function that might be used as a model for the data in the scatter plot.
A. Exponential, f(x) = ab-x or f(x) = P0e-kx, k > 0
B. Logistic, f(x) = 
C. Polynomial, not quadratic
D. Logarithmic, f(x) = a + b ln x
Answer: D
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Compute the partial sum of the geometric series for the stated value of n. Round your answers to four decimal places.ak = 6
(k-1); n= 9
A. S9 = 16.8178 B. S9 = 11.6972 C. S9 = 12.047 D. S9 = 11.9766
Simplify the expression without a calculator.(-3)-4
A. 81
B. 
C. - 
D. -81
Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. x + 2y + 2z = -4 4y + 4z = 0 z = 3
A. Dependent B. Independent C. Inconsistent
Simplify the expression. Assume that all variables are positive when they appear.
A. ±9 B. 27 C. -9 D. 81