AnswersTX-PrecalculusStep Functions

Step Functions Answers

10 verified answers3 views
1
Free Preview

For which x-values is the graph below discontinuous?

Question illustration
A
{...–3, –2, –1, 0, 1, 2, 3, ...}
B
{... –3, –1, 1, 3, ...}
C
{...–4, –2, 0, 2, 4, ...}
D
{...–3, –1, 0, 1, 3, ...}
2
Free Preview

Kareem wrote the expressions shown below.Which pair is equivalent?

Question illustration
A
and
Option A
B
and
Option B
C
and
Option C
D
and
Option D
3

The United States Postal Service charges $0.55 to mail a first-class letter that weighs up to 1 ounce. Each additional ounce costs $0.15. Which equation represents the situation?

A
mc029-1.jpg
Option A
B
mc029-2.jpg
Option B
C
mc029-3.jpg
Option C
D
mc029-4.jpg
Option D
4

Which set of numbers best describes the possible values of x in the equation below?

Question illustration
A
all integer values of x
B
all real number values of x
C
only negative values of x
D
only noninteger values of x
5

A skate shop rents roller skates as shown in the table below. Roller Skate RentalsTimeCostup to 60 minutes$5up to 2 hours$10up to 5 hours$20daily$25Which graph and function model this situation, where c is the cost, in dollars, of renting skates, and t is the number of hours in a single day that the skates are rented?

A
mc024-1.jpg
Option A
B
mc024-3.jpg
Option B
C
mc024-5.jpg
Option C
D
mc024-7.jpg
Option D
6

What is the value of ?

Question illustration
A
–13
B
–12
C
12
D
13
7

Which statement explains why the value of is 2 but the value of is –3?

Question illustration
A
because 2 is the greatest integer not greater than 2.4, and –3 is the greatest integer not greater than –2.4
B
because 2.4 rounds to 2, and –2.4 rounds to –3
C
because 2.4 is positive, and –2.4 is negative
D
because 2 is the least integer greater than 2.4, and –3 is the least integer greater than –2.4
8

What is the value of ?

Question illustration
A
3
B
3.5
C
3.6
D
4
9

In the function , which values of the function are equivalent?

Question illustration
A
f(–1) and f(–2)
B
f(1) and f(0)
C
f(–3) and f(–2.1)
D
f(2) and f(1.9)
10

Used books cost $2.25 each. Which expression represents the total number of books that can be purchased for $10?

A
mc021-1.jpg
Option A
B
mc021-2.jpg
Option B
C
mc021-3.jpg
Option C
D
mc021-4.jpg
Option D
11

Used books cost $2.25 each. Which expression represents the total number of books that can be purchased for $10?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
12

What is the value of ?

Question illustration
A
3
B
3.5
C
3.6
D
4
13

What is the value of ?

Question illustration
A
–13
B
–12
C
12
D
13
14

The United States Postal Service charges $0.55 to mail a first-class letter that weighs up to 1 ounce. Each additional ounce costs $0.15. Which equation represents the situation?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
15

In the function , which values of the function are equivalent?

Question illustration
A
f(–1) and f(–2)
B
f(1) and f(0)
C
f(–3) and f(–2.1)
D
f(2) and f(1.9)
16

What is the value of ?

Question illustration
A
–2
B
–1
C
0
D
1
17

What is the value of ?

Question illustration
A
–36
B
–33
C
–32
D
–30
18

A skate shop rents roller skates as shown in the table below. Roller Skate RentalsTimeCostup to 60 minutes$5up to 2 hours$10up to 5 hours$20daily$25Which graph and function model this situation, where c is the cost, in dollars, of renting skates, and t is the number of hours in a single day that the skates are rented?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
19

Kareem wrote the expressions shown below.Which pair is equivalent?

Question illustration
A
and
Option A
B
and
Option B
C
and
Option C
D
and
Option D
20

For which x-values is the graph below discontinuous?

Question illustration
A
{...–3, –2, –1, 0, 1, 2, 3, ...}
B
{... –3, –1, 1, 3, ...}
C
{...–4, –2, 0, 2, 4, ...}
D
{...–3, –1, 0, 1, 3, ...}

Did you find these answers helpful?

More from this Course

Quiz
15 verified answers

Comparing Characteristics of Functions

Quiz
14 verified answers

Step Functions

Quiz
13 verified answers

Comparing Characteristics of Functions