Unit Test — Cumulative exam Answers
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21
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Which is the graph of y =-3 ?
A
On a coordinate plane, a curve starts at (0, 0) and curves up through (negative 3, 3).
B
On a coordinate plane, a curve starts at (0, 0) and curves down through (1, negative 1) and (4, negative 2).
C
On a coordinate plane, a curve starts at (0, 0) and curves down through (1, negative 3).
D
On a coordinate plane, a curve starts at (0, 0) and curves up through (1, 3) and (2, 4.5).
22
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Rectangular coordinates and polar coordinates both represent the same complex number z.Which set of equations demonstrates why both sets of coordinates represent the same number?
A
r = StartRoot 3 EndRoot + StartRoot 3 EndRoot = StartRoot 6 EndRoot and theta = inverse tangent of (1) = StartFraction pi over 4 EndFraction
B
r = StartRoot 3 EndRoot + StartRoot 3 EndRoot = StartRoot 6 EndRoot and theta = inverse tangent of (StartRoot 3 EndRoot) = StartFraction pi over 4 EndFraction
C
r = StartStartRoot (StartRoot 3 EndRoot) squared + (StartRoot 3 EndRoot) squared EndEndRoot = StartRoot 6 EndRoot and theta = inverse tangent of (1) = StartFraction pi Over 4 EndFraction
D
r = StartStartRoot (StartRoot 3 EndRoot) squared + (StartRoot 3 EndRoot) squared EndEndRoot = StartRoot 6 EndRoot and theta = inverse tangent of (StartRoot 3 EndRoot) = StartFraction pi Over 4 EndFraction
23
Review the four points on the complex plane.
A
point AB
point BC
point CD
point D24
Which statement comparing the oblique asymptotes of the functions f(x) and g(x) is true?
A
The oblique asymptote for g(x) is steeper than for f(x).B
Both functions have the same oblique asymptote.C
The oblique asymptote for f(x) is steeper than for g(x).D
Both functions have parallel oblique asymptotes.25
Which pair of related inequalities can be graphed to find the solution set to log(x + 90) ≥ 7?
A
y ≥ log(x + 90) and y ≤ 7B
y ≥ log(x + 90) and y ≥ 7C
y ≤ log(x + 90) and y ≤ 7D
y ≤ log(x + 90) and y ≥ 7Did you find these answers helpful?
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