Review day #1-Exponential basics

What type of function is y = 7(5/4)^x?

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

Tags

CCSS.HSF-IF.C.8B

• A.
• B.
• C.
• D.

Tags

CCSS.HSF-IF.C.8B

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

Tags

CCSS.HSF.LE.A.2

In the equation

y = 10(3)^x

What is the initial amount?

• 10

• 3

• x

• y

Tags

CCSS.HSF.LE.B.5

Ty's house is worth $100,000 right now. It will lose value at a rate of 2% per year.
Which function models this situation?

• f(x) = 100,000(0.02)^x
• f(x) = 100,000(1.02)^x
• f(x) = 100,000(0.98)^x
• f(x)=100,000(98)^x

Tags

CCSS.HSF.LE.A.2

What type of function describes the story below?
You have $5 and triple your money every day. 

• Linear
• Exponential
• Neither

Tags

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.3

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

Tags

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

CCSS.HSF.LE.B.5

What is the growth rate of the following function:  $f\left(x\right)=3\left(2\right)^x$  

• Doubling

• Tripling

• Halving

• Elevensies

Tags

CCSS.HSF-IF.C.8B

 $f\left(x\right)=15\left(\frac{2}{3}\right)^x$  is an example of...

• Exponential Decay

• Exponential Growth

• Linear Decay

• Linear Growth

Tags

CCSS.HSF-IF.C.8B

An manager of a Cava restaurant created a secret promotion on a Saturday. After an initial cost of $8 per food bowl, the manager would drop the price of each bowl sold throughout the day by 1%. What function represents the cost of a Cava bowl throughout the day?

• $f\left(x\right)=8\left(0.99\right)^x$

• $f\left(x\right)=8\left(0.01\right)^x$

• $f\left(x\right)=8\left(1.01\right)^x$

• $f\left(x\right)=0.01\left(8\right)^x$

Tags

CCSS.HSF.LE.A.2