STAAR Review

What appears to be the domain of the part of the exponential function graphed on the grid?

• A) -1 ≤ x ≤ 3

• B) -1 ≤ y ≤ 3

• C) 5.3 < x ≤ 27

• D) 5.3 ≤ y ≤ 27

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

The function w(t) = 270(1.029)^t can be used to estimate the number of whales in the North Atlantic Ocean at the end of t years. What does 1.029 represent in this function?

• The initial number of whales in the North Atlantic Ocean

• The decay factor of the number of whales in the North Atlantic Ocean

• The number of whales in the North Atlantic Ocean at the end of the first year

• The growth factor of the number of whales in the North Atlantic Ocean

Tags

CCSS.HSF.LE.B.5

The balance in the account after x years can be modeled by b(x) = 850(1.025)^x. Which statement is the best interpretation of one of the values in this function?

• The initial balance of the account decreases at a rate of 97.5% each year.

• The balance in the account increases at a rate of 2.5% each year.

• The initial balance of the account was $1,025.

• The balance in the account at the end of one year is $850.

Tags

CCSS.HSF.LE.B.5

• 690

• 736

• 622

• 626

Tags

CCSS.HSF.IF.A.2

• 
• 
• 
• 

• 
• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

• A

• B

• C

• D

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

• A

• B

• C

• D

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2D

What is the slope of the line represented by 5x - 12y = 24?

• -2

• 24/5

• -12

• 5/12

Tags

CCSS.8.EE.B.5