AnswersTX-Algebra II A-CRModeling with Systems

Modeling with Systems — Unit test Answers

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Which values of x and y would make the following expression represent a real number?(4 + 5i)(x + yi)

A
x = 4, y = 5
B
x = –4, y = 0
C
x = 4, y = –5
D
x = 0, y = 5
22
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A box is to be constructed with a rectangular base and a height of 5 cm. If the rectangular base must have a perimeter of 28 cm, which quadratic equation best models the volume of the box? V = lwhP = 2(l + w)

A
y = 5(28 – x)(x)
B
y = 5(28 – 2x)(x)
C
y = 5(14 – x)(x)
D
y = 5(14 – 2x)(x)
23

Which is the standard form of the equation of the parabola that has a vertex of (3, 1) and a directrix of x = –2?

A
Option
B
✓ Correct
C
Option
D
Option
25

What is the solution set of the quadratic inequality

Question illustration
A
Option
B
Option
C
Option
D
✓ Correct

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