Unit 2 Summative Assessment Review

Write the domain and range for the given graph:

Mr. Johnson decides to take his fifth-grade class to a little league baseball game. The total cost f(x) includes a ticket fee of $2 plus $2 for each bag of Cheetos. The situation can be represented by f(x)=2x+2, where x represents the number of bags each child purchases. 

If Mr. Johnson limits each student to 3 bags of Cheetos, what is the domain of the situation?

• 0 ≤ x ≤ 8

• 0 ≤ x ≤ 3

• {0, 1, 2, 3}

• {2, 4, 6, 8}

Algebra students at Boles Junior High wanted to fly to Antarctica to observe the glacier’s height changing due to temperature. As a class, we observed that the average height of a glacier is 2.1 kilometers high. On this trip, we discovered that each glacier melts at 0.05 kilometers per year.

What would the range of the function, r(x)=2.1-0.05x, be for this situation?

• All real numbers

• r(x) ≤ 0.05

• r(x) ≤ 0

• r(x) ≤ 2.1

Which of the following does not represent a function?

• A

• B

• C

• D

What is the domain of the function shown on the graph below?

• The domain is all real numbers greater than or equal to -1 and less than or equal to 3

• The domain is all real numbers greater than or equal to -2 and less than or equal to 4

• -2 ≤ x < 4

• -3 ≤ x ≤ 3

What is the value of f(1)?

Mathematical Equivalence

ON

Mathematical Equivalence

ON

What are the domain and range of this line segment?

​ ​ ​ ​ ​ ​

• Domain: all real numbers

• Domain: all real numbers greater than or equal to -3 and less than 1

• Domain: all real numbers greater than -3 and less than or equal to 1

• Range: all real numbers greater than or equal to -3 and less than 2

• Range: all real numbers greater than -3 and less than or equal to 2

What is the domain of the exponential function shown in the graph?

• All real numbers

• x ≥ 0

• x < 0

• x > 0

What is the range of the exponential function shown in the graph?

• the range is greater than 0 and less than 11

• the range is greater than or equal to 0

• the range is greater than 0 and less than or equal to 11

• the range is less than or equal to 11