Use technology to find a logistic regression curve 
approximating the given data. (Round b to three significant digits and A and N to two significant digits.)
x 0 20 40 60 80 100 ?y2.23.8 5.0 6.1 6.8 6.9?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: A
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Find a linear model for the following data table. Round your answer to two decimal places, if necessary. x 3 4 5 6 y 16 12 8 4?
A. ?
B. ?
C. ?
D. ?
Determine the number of significant digits in the given approximate number.9000.4
A. 4 B. 5 C. 3 D. 2
Find the x-intercepts for the parabola whose equation is given. If the x-intercepts are irrational, round your answers to the nearest tenth.y = x2 + 4x - 7
A. x-intercepts: none B. x-intercept: (4, 0) C. x-intercepts: (-2 ± 3.3, 0) D. x-intercepts: (-4, 0) and (3, 0)
Find the coordinates of the vertex and the intercepts of the quadratic function. When necessary, approximate the x-intercepts to the nearest tenth.f(x) = -2x2 - 2x - 10
A. V(2, -10); I(0, -10); no x-intercepts
B. V
; I(0, 10); (-1.7, 0), (2.7, 0)
C. V
; I(0, -10); no x-intercepts
D. V
; I(0, 10); (-2.7, 0), (1.7, 0)