Answers WSFCS Math 2 CRCumulative Exam

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What is the following sum?

6 b squared (RootIndex 3 StartRoot 2 a EndRoot)

12 b squared (RootIndex 3 StartRoot 2 a EndRoot

6 b squared (RootIndex 6 StartRoot 2 a EndRoot)

12 b squared (RootIndex 6 StartRoot 2 a EndRoot)

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Which is the graph of ?

Option

Raj tried to solve the system below. Raj’s Work What error did Raj make?

Raj forgot to multiply the value of x by 9 when solving for the value of y.

Raj subtracted 120 from both sides when he solved for the value of x.

Raj forgot the negative sign when substituting –15 + 9x for y.

Raj found the value of –y instead of y.

A quadratic equation has zero real number solutions. Which could be the discriminant value associated with this equation?

–5

Which expression is equivalent to ?

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The profits in hundreds of dollars, P(c), that a company can make from a product is modeled by a function of the price, c, they charge for the product: P(c) = –20c2 + 320c + 5,120. What is the maximum profit the company can make from the product?

$540,000

$640,000

$800,000

$896,000

Which function has a domain of and a range of ?

y = StartRoot x minus 5 EndRoot + 3

y = StartRoot x + 5 EndRoot minus 3

y = negative StartRoot x minus 5 EndRoot + 3

y = negative StartRoot x + 5 EndRoot minus 3

Given: AB = BCProve: B is the midpoint of AC.

two-column proof

one-paragraph proof

flowchart proof

two-paragraph proof

Fiona is completing the square to solve the polynomial equation.x2 – 4x + 1 = 0

isolating the constant 1

adding 4 to both sides of the equation

isolating the second term, –4x

adding 1 to both sides of the equation

Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?

100

What is the following quotient?

2 (RootIndex 3 StartRoot 3 EndRoot) minus RootIndex 3 StartRoot 18 EndRoot

2 (RootIndex 3 StartRoot 3 EndRoot) minus 3 (RootIndex 3 StartRoot 2 EndRoot)

3 (RootIndex 3 StartRoot 3 EndRoot) minus RootIndex 3 StartRoot 18 EndRoot

3 (RootIndex 3 StartRoot 3 EndRoot) minus 3 (RootIndex 3 StartRoot 2 EndRoot)

Angle RSU is complementary to angle UST. Angle QSR is congruent to angle RSU.

They are complementary.

They are supplementary.

They are congruent.

They are obtuse.

Solve the radical equation.Which is an extraneous solution to the radical equation?

m = −5

m = −2

m = 5

There are no extraneous solutions to the equation.

Which function is a quadratic function?

f(x) = 2x2

g(x) = 5x3

k(x) = –x

b(x) = –9x4

What is the following product? Assume

6 y squared StartRoot 10 EndRoot + 12 StartRoot 5 y EndRoot

6 StartRoot 10 EndRoot + 12 StartRoot 5 y EndRoot

6 y squared StartRoot 10 EndRoot + 4 StartRoot 5 y EndRoot

3 y squared StartRoot 10 EndRoot + 12 StartRoot 5 y EndRoot

If x is a positive integer, which expression is equivalent to ? Assume .

RootIndex 20 StartRoot x Superscript 7 EndRoot

x (RootIndex 20 StartRoot x cubed EndRoot)

StartFraction RootIndex 6 StartRoot x Superscript 5 Baseline EndRoot Over x squared EndFraction

x cubed (RootIndex 6 StartRoot x Superscript 5 Baseline EndRoot)

What is the solution of ?

x = –10

x = 3

x = –10 or x = 3

no solution

The length of a rectangular field is represented by the expression . The width of the field is represented by the expression . How much greater is the length of the field than the width?

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Which equation has an a-value of –2, a b-value of 1, and a c-value of 3?

0 = –2x2 + x + 3

0 = 2x2 + x + 3

0 = –2x2 + 3

0 = 2x2 – x + 3

Which graph represents an inverse variation?

Option

The function y = is translated using the rule (x, y) → (x – 7, y + 2)to create f(x).What is the domain of f(x)?

{x | x > –7}

{x | x > 7}

{x | x > –2}

{x | x > 2}

Which part of the proof does the fourth statement and reason represent?Given: AB ≅ BCBC ≅ EF Prove: EG = AB + FG

It is part of the given information.

It is part of the argument.

It is the conclusion.

It is an assumption.

Question text not available

direct variation; k =

direct variation; k = 4

inverse variation; k =

inverse variation; k = 4

A horizontal line has points A , E, D. A line extends vertically from point E to point C and forms a right angle at C E D. A line extends up and to the left from point E to point B.

∠CED measures 45°.

∠CED measures 180°.

∠AEC measures 90°.

∠AEC measures 45°.

Which describes all possible values of f(x) in the function f(x) = ?

all real numbers

all real numbers except for 0

all positive real numbers and 0

all negative real numbers and 0

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