Test - Exponential Growth and Decay

Is this exponential growth or decay?

• Growth
• Decay

Tags

CCSS.HSF-IF.C.8B

What function type models this graph?

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

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

CCSS.HSF.LE.A.3

Is this exponential growth or decay?

• Growth
• Decay

Tags

CCSS.HSF.IF.B.4

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

Your shiny new boat cost $7650.  The depreciation for your boat is 14% per year.  What is the equation that models this problem for the value of the vehicle in 3 years?

• y= 7650(.14)³
• y= 7650(.86)³
• y= 7650(-.14)³
• y= 7650(1.14)³

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

You put your money into a savings account that earns 8% interest compounded annually.  If you originally invested $1,240, how much is in your account after 2 years?

• $1,438.40
• $1297.94
• $1,446.34
• $4017.60

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

Riley invested $1,000 in savings bonds. If the bonds earn 6.75% interest compounded semi-annually, how much total will Riley earn in 15 years?

• $1,584.62
• $2,651.39
• $2,706.86
• $1,825.10

How much interest is earned on a $50 loan at a rate of 3% compounded annually for 5 years?

• $7. 96
• $57. 96
• $7.50
• $57.50

If I had a baseball that was worth $3500 and it was reported to increase in value at a rate of 5% per year what would the ball be worth in 7 years?  How long would it take for the baseball to double in value? 

• Worth $4924.90 in 7 years and it would take between 14 and 15 years for it to double in value
• Worth $4924.90 in 7 years and it would take between 19 and 20 years for it to double in value
• Worth $4690.30 in 7 years and it would take between 14 and 15 years for it to double in value

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

Tags

CCSS.HSF.LE.A.2