Grade 9CP Chapter 7 Lessons 5-7

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth
• Exponential Decay
• Linear
• None

Is this exponential growth or decay?

• Growth
• Decay

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

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

• Exponential Growth

• Linear Function

• Exponential Decay

• Quadratic Fuction

Write an equation that models the following situation:

The current student count at John Jay is 6500, it is expected to grow at a rate of 14% next year.

• y= 6500(1+.14)^x

• y= 6500(1-.14)^x

• y= 6500(14)^x

• y= 14(6500)^x

Which of the followings functions shows an initial amout of $15 and an increase of 35% ?

• y=15(35)^x

• y=15(1.35)^x

• y=15(0.35)^x

• y=35(15)^x

Is this exponential growth or decay?

• Growth
• Decay

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

Compare f(x) = 3^x- 4 with the basic function g(x) = 3^x

• 4 units up
• 4 units to the left
• 4 units to the right
• 4 units down

What transformations occur in the following function?

• right 3, up 2
• left 3, up 2
• left 3, down 2
• right 3, down 2