Answers FL-1200330-Algebra 2 CRModeling with Quadratic Equations

Modeling with Quadratic Equations — Unit test Answers

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The cost of producing x soccer balls in thousands of dollars is represented by h(x) = 5x + 6. The revenue is represented by k(x) = 9x – 2. Which expression represents the profit, (k – h)(x), of producing soccer balls?

14x – 8

14x + 4

4x – 8

4x + 4

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Which equation represents a linear function?

y(x – 1) = 9

y – 5 = x(–x + 2)

y(y – 1) = x + 25

y – 5 = x – 20

The graph of f(x) is shown below.If g(x) and f(x) are inverse functions, which graph represents g(x)?

On a coordinate plane, a curve opens up and to the left in quadrant 1. The curve starts at (0, 0) and curves up sharply through (2, 4).

On a coordinate plane, a curve opens down and to the left in quadrant 2. The curve starts at (0, 0) and gradually curves through (negative 4, 2).

On a coordinate plane, a curve opens open and to the left in quadrant 3. The curve starts at (0, 0) and curves gradually through (negative 4, negative 2).

On a coordinate plane, a curve opens up and to the left in quadrant 1. The curve starts at (0, 0) and curves up through (4, 1).

If m 0, the graph of y = mx + b does not pass through which quadrant?

Quadrant I

Quadrant II

Quadrant III

Quadrant IV

Which statement best describes how to determine whether f(x) = x2 – x + 8 is an even function?

Determine whether –x2 – (–x) + 8 is equivalent to x2 – x + 8.

Determine whether (–x)2 – (–x) + 8 is equivalent to x2 – x + 8.

Determine whether –x2 – (–x) + 8 is equivalent to –(x2 – x + 8).

Determine whether (–x)2 – (–x) + 8 is equivalent to –(x2 – x + 8).

Celo used the simple interest formula to calculate the interest he earned on his savings last month. Which equation is equivalent to the simple interest formula?

uppercase P = StartFraction uppercase A Over 1 + r t EndFraction

uppercase P = StartFraction 1 + r t Over uppercase A EndFraction

uppercase P = uppercase A minus (1 + r t)

uppercase P = uppercase A + (1 + r t)

Lionel computed the average rate of change in the depth of a pool over a two-week interval to be zero. Which statement must be true?

The pool must have been empty for the entire interval.

The pool must have been the same depth at the start of the interval as it was at the end of the interval.

The pool must have been deeper at the end of the interval than it was at the start of the interval.

The pool must have been more shallow at the end of the interval than it was at the start of the interval.

Which graph represents an even function?

A coordinate plane has 5 points. The points are (negative 6, negative 4), (negative 4, 2), (2, 4), (4, negative 2), (6, 2).

A coordinate plane has 7 points. The points are (negative 3, negative 6), (negative 2, negative 4), (negative 1, negative 2), (0, 0), (1, 2), (2, 4), (3, 6).

A coordinate plane has 7 points. The points are (negative 5, 2), (negative 4, 1), (negative 3, 3), (negative 2, 5), (2, negative 2), (3, negative 5), (4, negative 6).

A coordinate plane has 7 points. The points are (negative 4, negative 3), (negative 3, negative 5), (negative 2, 1), (0, 0), (2, 1), (3, negative 5), (4, negative 3).

Which function is the inverse of ?

f Superscript negative 1 Baseline (x) = negative one-fifth x + four-fifths

Option

Which statement is true about ?

The graph of f(x) has a vertex of (–3, 2).

The graph of f(x) is a horizontal compression of the graph of the parent function.

The graph of f(x) opens downward.

The graph of f(x) has range of f(x) –2.

If f(x) is a linear function, what is the value of n?xf(x)377n9161626.5

The height in feet, h, of a model rocket t seconds after launch is given by the equation . The average rate of change in h(t) between t = 1 second and t = 3 second is 6. What does the average rate of change tell you about the rocket?