Modeling Exponential Growth and Decay Mark

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

• y=5000(1 - 0.30)^x

• y=30(5000)^x

• y=5000(1 + 0.30)^x

• y=5000x^x

Tags

CCSS.HSF.LE.A.2

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=5000(0.3)^x

Tags

CCSS.HSF.LE.A.2

What is a, the starting term, for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

• x

Tags

CCSS.HSF.LE.B.5

Which of the following functions shows an initial amount of $75 and a decrease of 12% each year?

• y = 75(12)^x

• y = 75(1 + 0.12)^x

• y = 75(0.88)^x

• y = 75(88)^x

Tags

CCSS.HSF.LE.A.2

(a)  

• A

• B

• C

• D

Tags

CCSS.HSF.LE.A.2

(a)  

• A

• B

• C

• D

Tags

CCSS.HSF.LE.A.2

Mathematical Equivalence

ON

Tags

CCSS.HSF.LE.A.2

(a)  

• A

• B

• C

• D

Tags

CCSS.HSF.LE.B.5

In March, 2020, before the Covid-19 lockdown, 1,200,000 Texans had applied for unemployment. During the COVID-19 lockdown, the number of people applying for unemployment increased by 4% each month. What exponential function can be used to find the number of people applying for unemployment after x months of COVID-19 lockdown?​

Tags

CCSS.HSF.LE.A.2

• $90

• decreases

• 15%

• $15

• 85%

• 90%

• $85

• increases

Tags

CCSS.HSF.LE.B.5