Exponential Word Problems

You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2011?

• $344,022

• $15,000

• $31,500

• $28,500

Tags

CCSS.HSF.BF.A.2

An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%.

What is the multiplier (b) for this problem?

• 1.29

• .29

• .71

• 1.71

Tags

CCSS.HSF-LE.A.1C

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

• y = 15(35)^x

• y = 15(0.35)^x

• y = 15(1.35)^x

• y = 35(1.15)^x

Tags

CCSS.HSF.LE.A.2

Is this exponential growth or decay?

• Growth because a=1

• Growth because there is no a

• Decay because b=0.5

• Neither because a=0

Tags

CCSS.HSF-IF.C.8B

Is this exponential growth or decay?

• Growth, because of 7

• Growth because of 1.2

• Decay, because of 1.2

• Decay because of 7

Tags

CCSS.HSF-IF.C.8B

Pick the equation that is exponential decay

• y=2000(0.88)

• y=-4x

• y=0.5(1.88)

• y= -7+10x

Tags

CCSS.HSF.LE.A.1

Pick the equation that is exponential growth

• y=2(0.5)^x

• y = .5x - 2

• y = 2x + .5

• y = 0.5(2)^x

Tags

CCSS.HSF-LE.A.1A

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

• y=8(15,000)^x

• y=15,000(0.92)^x

• y=15,000(1.08)^x

• y=15,000(0.08)^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=5000(1.3)^x

• y=30(5000)^x

• y=5000x^x

Tags

CCSS.HSF.LE.A.2

James' 70 in. giant peach doubles in size every week. Write an expression that would represent how big the peach is after 5 weeks.

• 70(2)³⁵

• 2(70)⁵

• 5(70)²

• 70(2)⁵

Tags

CCSS.HSF.BF.A.2