Read Exponential Functions

What does the model A=p(1+r)^t best represent?

• Exponential growth
• Simple Interest
• Compound Interest
• Exponential Decay

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

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

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

What is the pattern you see in this table?

• Common Ratio = 1/3
• Common Difference = 8
• Common Ratio = 3
• Common difference = 3

Write the equation that represents the table below:

• y=1/2(4)^x
• y=2(4)^x
• y=4(2)^x
• y=4(1/2)^x

In which of the following does x = 3?

• 2^x-2=8
• 5^x-2=25^3x
• 2^x+3=4^x
  
• 4x+6=9

Solve the exponential equation:

• -11/4
• 6
• 9/4
• 8

What is the balance of $6000 compounded annually at a rate of 4% for 10 years?

• $8,881.47
• $7,432.93
• $8,400
• $6,500

Solve the following exponential equation.

• -15
• -3
• 7/4
• -8

What is the y-intercept of the function?

• 2
• 3
• 1
• -2