Determine whether the sequence is geometric.1, 
, 13, 13
, . . .
A. Geometric
B. Not geometric
Answer: A
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Find all real numbers that satisfy the equation.tan 4x = 0
A. 
B. 
C. {x 
x = 2k?}
D. {x 
x = k?}
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Find the vertex, focus, and directrix of the parabola. Graph the equation.(x + 2)2 = -(y - 2)
A. vertex: (2, -2)
focus: (2, -2.25)
directrix: y = -1.75
B. vertex: (2, -2)
focus: (1.75, -2)
directrix: x = 2.25
C. vertex: (-2, 2)
focus: (-2.25, 2)
directrix: x = -1.75
D. vertex: (-2, 2)
focus: (-2, 1.75)
directrix: y = 2.25
Determine which, if any, of the following functions might be used as a model for the data: Linear, with 
quadratic, with 
quadratic, with with 
neither linear nor quadratic. IA Robotics
Year
A. f(x) = ax2 + bx + c, a > 0 B. f(x) = mx + b C. f(x) = ax2 + bx + c, a < 0 D. neither linear nor quadratic