Exponential Growth and Decay

Cal graphed the exponential function shown. What is the relationship? ​ (a)   What type of number is b? ​ (b)  

• decay

• growth

• irrational

• linear

Is this exponential growth or decay?

• Growth

• Decay

How many fruit flies are in the population after 7 days (1 week)?

• 140 flies

• 105 flies

• 101 flies

• 735 flies

Cal graphed the exponential function shown. What is the relationship? ​ (a)   What type of number is b? ​ (b)  

• decay

• growth

• irrational

• linear

• The number of players decreases by 30% each round.
• The range for the function is 1 < y < 5.
• The domain for the function is 5 < x < 65.
• The situation represented is exponential decay.

A population of fish starts at 8,000 and decreases by 6% per year. What is the population of fish after 10 years?

• 14327

• 4309

• 839

• 7680

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. How many mosquitoes will there be after 4 months?

• 9766

• 9006

• 9765

• 5433

Twenty years ago, Mr. Davis purchased his home for $160,000. Since then, the value of the home has increased about 5% per year. How much is the home worth today?

• $176,783.29

• $424,527.63

• $57,357.75

• $532,041,076.80

What is the initial value for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

• x

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)⁶

• Growth

• Decay