Unit 5 Quiz 1 Recovery

Label the function type:

a

b

c

Exponential Function

Linear Function

Quadratic Function

At large values of x on a graph, which would have the higher y-value?

(rank from lowest to highest)

• 
• 
• 

Answer explanation

Assuming all graphs increase from left to right, at large values for x, exponential functions have the highest y-values

Which situation is best modeled by a quadratic function?

• The height of a ball after it is thrown in the air

• Growth of bacteria in a Petri dish

• Expense to rent a kayak at an hourly rate

• Impact of compound interest on a bank account

Which two situations are best modeled by an exponential function?

(select two answers)

• The height of a ball after it is thrown in the air

• Growth of bacteria in a Petri dish

• Expense to rent a kayak at an hourly rate

• Impact of compound interest on a bank account

The function below models the total number of bacteria inside a Petri dish that is allowed to grow as part of a research experiment.

----- ----- ----- -----

b(t) = 1(2)^t

----- ----- ----- -----

The variable t represents hours since the start of the experiment. Which two statements below are true?

• Initially 1 bacteria is in the Petri dish

• Initially 2 bacteria are in the Petri dish

• The growth rate is 2

• The decay rate is 2

• The growth rate is 1

Jeremy decides to rent the clubhouse at his apartment to celebrate a birthday party. He decides to buy sandwiches for each person he invites. The function below models the total expense for the event.

----- ----- ----- -----

e(s) = 8s + 60

----- ----- ----- -----

The variable s represents the number of sandwiches purchased. Which two statements below are true?

• The clubhouse reservation fee was $60

• The clubhouse reservation fee was $8

• For each extra sandwich purchase, total expense increases by $8

• For each extra sandwich purchase, total expense increases by $60

An anchor chart is provided that shows how to find the slope for a linear table. What is the slope for the table with function f(x)?

Mathematical Equivalence

ON

Answer explanation

Subtract one y-value by the previous to find answer

An anchor chart is provided that shows how to find the slope for a linear table. What is the slope for the table in green?

Mathematical Equivalence

ON

Answer explanation

Subtract one y-value by the previous to find answer

An anchor chart is provided that shows how to find the growth factor for an exponential table. What is the growth factor for the table in green?

Mathematical Equivalence

ON

Answer explanation

Divide one y-value by the previous to find answer