Answers EAP-Algebra Functions and Data Analysis A CRUnit Test

Unit Test — Unit test Answers

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The graph above represents a step function. A graph of a step function resembles the steps of a staircase and is not continuous. The black dot represents a closed endpoint (to include) and the white dot represents an open endpoint (do not include). Utilizing the graph, how much does it cost to park for 2 hours? a. $3 c. $9 b. $6 d. $12 Please select the best answer from the choices provided

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Consider the function represented by the graph.

Option

Lara made the table below of the predicted values for h(t), the height, in meters, of a penny t seconds after it is dropped off of the back of the bleachers.

0.5 seconds

0.6 seconds

0.7 seconds

0.8 seconds

Which graph represents the same relation as the set ?

A coordinate plane has 3 points. The points are (negative 3, 2), (3, negative 2), (5, 5).

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

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

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

Which graph matches the following statement? You are driving a steady speed, then stop for a train. When the train passes, you resume your speed. a. c. b. d. Please select the best answer from the choices provided

A 2-column table with 10 rows. The first column is labeled x with entries negative 4, negative 3, negative 2, negative 1, 0, 1, 2, 3, 4, 5. The second column is labeled f of x with entries 105, 0, negative 15, 0, 9, 0, negative 15, 0, 105, 384.

(0, 9)

(4, 105)

(–1, 0)

(2, –15)

Which intervals show f(x) increasing? Choose two options.

[–2.5, –1.6)

[–2, –1]

(–1.6, 0]

[0, 0.8)

(0.8, 2)

For what value of is the function one-to-one?

What is the domain of the relation graphed below?

domain:

A frozen yogurt shop offers a rewards system for frequent customers. The graph below represents how much a rewards customer pays based on the number of ounces of frozen yogurt purchased.

A rewards customer earns 2 free ounces of yogurt because the total amount paid for 10 ounces and 12 ounces is the same.

A rewards customer pays $5 per ounce because the total amount paid is always increasing.

A rewards customer pays $20 for 10 or 12 ounces of yogurt because the total amount paid is increasing.

A rewards customer earns 5 free ounces of yogurt because the total amount paid for 10 ounces and 12 ounces is the same.

The graph represents a mechanic’s labor costs for a given number of hours of car repair.

All repairs requiring 1 hour or less have the same labor cost.

Labor costs the same no matter how many hours are used for a repair.

Labor costs for a repair are less expensive as the number of hours increases.

There is no cost of labor for a repair requiring less than 1 hour.

Which relation below represents a one-to-one function?

A 2-column table has 5 rows. The first column is labeled x with entries 5, 14, 7, 13, 12. The second column is labeled f (x) with entries 26, 197, 50, 170, 197.

A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f (x) with entries 5, 2, 1, 2, 5.

A 2-column table has 5 rows. The first column is labeled x with entries 7.25, 7.5, 7.75, 8, 8.5. The second column is labeled f (x) with entries 11, 13, 15, 13, 11.

A 2-column table has 5 rows. The first column is labeled x with entries 9, 2, 4, 1, 5. The second column is labeled f (x) with entries 12, 7, 9, 13, 5.

Eli left his house one afternoon to study at the library. The graph shows his distance, in miles, away from his house as a function of time, in minutes.