Exponential Equations - Word Problems

• 300
• 1.53

• x

A population of bees has an initial population of 10 bees and increases 15% every day. Which number represents the starting population (a)?

• a = 100

• a = 0.15

• a = 10

• a = 0.015

A population of bees has an initial population of 10 bees and increases 15% every day. Which equations best represents the situation?

Bacteria on old cheese starts out with 15 bacteria. Every hour the bacteria grew by 20%. Which equation below represents the situation for x hours.

Pick the equation that is exponential GROWTH factor.

• y=2(0.5)^x
• y = 0.5(2)^x

Identify the y-intercept (initial value) in the function f(x)=13(.27)^x

• (.27)^x
• .27
• 13
• 3.51

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

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation that models this situation?

• y = 8(15,000)^x

• y = 15,000(1.08)^x

• y = 15,000(0.92)^x

• y = 15,000(0.08)^x

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

CCSS.HSF.LE.B.5