1/27 SB Lesson 22-3 Graphs of Expo. Funct.'s

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth
• Linear
• Exponential Decay
• None of the Abovee

Tags

CCSS.HSF-LE.A.1A

Suppose a culture of bacteria begins with 5000 cells and slowly dies, with a common ratio of 0.7 each year. Write an equation that represents this situation.

• y=5000(0.7)^x

• y=0.7(5000)^x

• y=5000.7x

• y=5000(-0.7)x

Which equation matches the graph?

• y=2(2)^x

• y=2(1/2)^x

• y= - 2(-2)^x

• y=1/2(2)^x

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Tags

CCSS.HSF-IF.C.7E

What is the equation that represents the exponential function in the image below?

• y=3(½)^x

• y=3(2)^x

• y=4(2)^x

• y=2(3)^x

Is this exponential growth or decay?

• Growth
• Decay

Tags

CCSS.HSF-IF.C.7E

Daniel’s Print Shop purchased a new printer for $35,000. Each year it depreciates and can be represented with $35000\left(.95\right)^x$   . How much will the printer be worth in 8 years?

• $23,219.72

• $136.72

• $51,710.94

• $16,710.94

Is y = 4(.20)^x growth or decay?

• Growth
• Decay

Tags

CCSS.HSF-IF.C.8B

Which statement is true?

• The graph represents an exponential growth situation.

• Eventually, the car will be worth exactly $0.

• The starting value of the car was $12,000.

• The value of the car is increasing.

• f(x) = 40(0.95)^x

• f(x) = 36(0.05)^x

• f(x) = 40(1.05)^x

• f(x) = 36(1.5)^x