Answers Crowley Credit Recovery Algebra II APerformance Task: Going on a Round Trip

Complex Numbers Answers

18 verified answers2 views

Free Preview

Which phrase represents the algebraic expression 5x - 9?

the product of five times a number and nine

the difference of nine times a number and five

the sum of five times a number and five

the difference of five times a number and nine

Free Preview

If and , what is the domain of ?

mc020-4.jpg

mc020-5.jpg

mc020-6.jpg

mc020-7.jpg

Which function has an inverse that is also a function?

g(x) = 2x – 3

k(x) = –9x2

f(x) = |x + 2|

w(x) = –20

If , what is ?

mc003-3.jpg

mc003-4.jpg

f Superscript negative 1 Baseline (x) = one-ninth x + 2

f Superscript negative 1 Baseline (x) = negative 2 x + one-ninth

Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution set of this problem?

x less-than negative 5

x greater-than negative 5

x greater-than negative 1

x less-than negative 1

Given , what is the average rate of change in f(x) over the interval [1, 5]?

–6

Negative one-half

One-fourth

The table shows how far a distance runner has traveled since the race began. What is her average rate of change, in miles per hour, during the interval 0.75 to 1.00 hours?Time Elapsed (Hours)Miles Traveled (Miles)0.502.000.753.501.004.75

4.75 miles per hour

5.00 miles per hour

5.50 miles per hour

6.00 miles per hour

To determine whether a graph of a relation is also a function, Shayla declares that the y-axis is a vertical line and counts the number of times that the graph intersects the y-axis. If the graph has exactly one y-intercept, Shayla concludes that the graph shows a function. In all other cases, she declares that it is not a function. Is Shayla applying the vertical line test correctly?

No, because the y-axis is a horizontal line.

No, because using the y-axis tests only whether x = 0 is mapped to multiple values.

Yes, because multiple y-intercepts represent multiple x-values being mapped to y = 0.

Yes, because the y-axis represents all vertical lines of the x-values.

If u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to ?

x3 – x2

–x3 + x2

–x3 + x2 – 1

x3 – x2 + 1

If a(x) = 3x + 1 and , what is the domain of ?

mc017-3.jpg

mc017-4.jpg

mc017-5.jpg

mc017-6.jpg

Which of the following is an example of why irrational numbers are not closed under addition?

, and 4 is not irrational

, and 1 is not irrational

, and 0 is not irrational

–3 + 3 = 0, and 0 is not irrational

Five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26. What is the solution set of this problem?

(negative infinity, negative 21)

(negative infinity, negative 21 right-bracket

Left-bracket negative 21, positive infinity)

(21, positive infinity)

Paul can install a 300-square-foot hardwood floor in 18 hours. Matt can install the same floor in 22 hours. How long would it take Paul and Matt to install the floor working together?

4 hours

9.9 hours

13.2 hours

30 hours

Meryl needs to add enough water to 11 gallons of an 18% detergent solution to make a 12% detergent solution. Which equation can she use to find g, the number of gallons of water she should add? Original(Gallons)Added(Gallons)New(Gallons)Amount of Detergent1.980 Amount of Solution11g

StartFraction 1.98 Over 11 + g EndFraction minus StartFraction 12 Over 100 EndFraction = 1

StartFraction 1.98 Over 11 + g EndFraction + StartFraction 12 Over 100 EndFraction = 1

StartFraction 11 + g Over 1.98 EndFraction = StartFraction 12 Over 100 EndFraction

StartFraction 1.98 Over 11 + g EndFraction = StartFraction 12 Over 100 EndFraction

Given and , for which value of does ?

x = three-halves

x = 2

x = five-halves

x = 4

If f(x) = 7 + 4x and , what is the value of ?

Eleven-halves

StartFraction 27 Over 10 EndFraction

160

270

Which graph represents an odd function?

There are 6 points on a coordinate plane. The points are (negative 5, 3), (negative 3, 1), (negative 1, 1), (1, 3), (3, negative 5), (5, negative 1).

There are 8 points on a coordinate plane. The points are (negative 4, 2), (negative 3, negative 1), (negative 1, negative 3), (0, 1), (1, 0), (2, negative 4), (4, 5), (5, 4).

There are 8 points on a coordinate plane. The points are (negative 4, 0), (negative 3, 1), (negative 2, negative 3), (negative 1, negative 2), (1, 2), (2, 3), (3, negative 1), (4, 0)

There are 11 points on a coordinate plane. The points are (negative 4, 3), (negative 4, 4), (negative 3, 5), (negative 2, 1), (negative 1, negative 1), (0, negative 3), (1, negative 1), (2, 1), (3, 5), (4, 3), (4, 4).

If f(x) is an even function and (6, 8) is one the points on the graph of f(x), which reason explains why (–6, 8) must also be a point on the graph?

Since the function is even, the outputs of a negative x-value and a positive x-value are the same.

Since the function is even, the outputs of a negative y-value and a positive y-value are the same.

The graph has rotational symmetry, so the point will be reflected across the y-axis.

The graph has rotational symmetry, so the point will be rotated 90 degrees about the origin.

Did you find these answers helpful?

Complex Numbers Answers

More from this Course

TRY EDGENUITY HACKS