Translate to an equation. Do not solve.What is 22.1% of 83?
A. 0.221 = n ? 83
B. n = 83 ? 0.221
C. n = 83 + 0.221
D. n = 0.221 ? 83
Answer: D
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Write the expression without parentheses.-(2z - 3w + 8y)
A. -2z - 3w + 8y B. -2z + 3w + 8y C. -2z - 3w - 8y D. -2z + 3w - 8y
Determine whether the system corresponding to the given augmented matrix is dependent or inconsistent. If it is dependent, give the solution.
A. dependent; (9, -10) B. dependent; (-9, 10) C. dependent; (-9, 10, -5) D. inconsistent
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.x2 + 2xy + y2 - 8x + 8y = 0
A. ? = 36.9°
+ 
= 1
ellipse
center (0, 0)
major axis is x'-axis
vertices at (±2, 0)
B. ? = 36.9°
+ 
= 1
ellipse
center (0, 0)
major axis is x'-axis
vertices at (±2, 0)
C. ? = 45°
y'2 = -4
x'
parabola
vertex at (0, 0)
focus at (-
, 0)
D. ? = 45°
x'2 = -4
y'
parabola
vertex at (0, 0)
focus at (0, -
)
Find only the rational zeros.f(x) = x4 + 2x3 + 13x2 - 4x - 22
A. -2, -3 B. -2, 2 C. 2, -1 D. No rational zeros