Illustrative Alg 1 Unit 5 Part 1

Evaluate the expression 3*5^{x} when x is 2.

Tags

8.EE.1

F.LE.3

8.EE.3

F.IF.4

F.BF.1.a

8.F.5

Jada rewrites 5*3^{x} as 15x. Do you agree with Jada that these are equivalent expressions? Explain your reasoning.

• Yes; you need to multiply the numbers first.

• No; the exponent only goes with the 3.

The graph shows the amount of a chemical in a water sample. It is decreasing exponentially. Find the coordinates of the points labeled C.

• (4, 409.6)

• (2, 409.6)

• (4, 25.6)

• (2, 360)

The graph shows the amount of a chemical in a patient's body at different times measured in hours since the levels were first checked. What is the equation of the graph?

• 
• 
• 

The graph shows the amount of a chemical in a water sample. It is decreasing exponentially. Find the coordinates of the points labeled A.

• (2 , 600)

• (2 , 640)

• (640 , 2)

• (2 , 580)

• 1

• 12

• 0

• 120

Select each TRUE equation

• 2⁴ = 2 X 4

• 2⁴ = 4 + 4

• 2⁴ = 2 X 2 X 2 X 2

Tags

6.EE.A.1

This graph represents one of the following descriptions. Which one?

• A phone loses 4/5 of its value every year after purchase: the relationship between the number of years since purchasing the phone and the value of the phone.

• The number of stores a company has triples approximately every 5 years: the relationship between the number of years and the number of stores.

• A camera loses 2/5 of its value every year after purchase: the relationship between the number of years since purchasing the camera and the value of the camera.

Using t for the number of years and c for the number of cats, write an exponential equation to fit the table.

• 
• 
• 
• 

The graph shows the yearly balance, in dollars, in an investment account. What is the initial value of the account?

• 1,000

• 2,000

• 3,000

• 5,000