Modeling with Functions — Cumulative exam Answers
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21
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Which of the following is the equation of the function below?
A
y equal to 2 cosecant left-square-bracket 2 (x + pi) right-square-bracket minus 2.
B
y equal to o point 5 secant left-square-bracket 2 (x + pi) right-square-bracket minus 4.
C
y equal to 0 point 5 cosecant left-square-bracket 2 (x + pi) right-square-bracket minus 4.
D
y equal to 2 secant left-square-bracket 2 (x + pi) right-square-bracket minus 2.
22
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What is the formula for margin of error?
A
ME =
B
ME =
C
ME =
D
ME =
23
Which graph represents the equation x2 = 8y?
A
On a coordinate plane, a parabola opens up. It has a vertex at (0, 0), a focus at (0, 8), and a directrix at y = negative 8.
B
On a coordinate plane, a parabola opens up. It has a vertex at (0, 0), a focus at (0, 2), and a directrix at y = negative 2.
C
On a coordinate plane, a parabola opens to the right. It has a vertex at (0, 0), a focus at (2, 0), and a directrix at x = negative 2.
D
On a coordinate plane, a parabola opens to the right. It has a vertex at (0, 0), a focus at (8, 0), and a directrix at x = negative 8.
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