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7.4 - Writing Exponential Equations

Mathematics

8th - 12th Grade

CCSS covered

Used 1+ times

7.4 - Writing Exponential Equations
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19 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A population of bees starts out with 10 bees and doubles every day.

y=10(2)xy=10\left(2\right)^x

y=10(2)x2y=10\left(2\right)^{\frac{x}{2}}

y=2(10)xy=2\left(10\right)^x

y=10(12)xy=10\left(\frac{1}{2}\right)^x

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A NCAA tournament starts out with 64 teams. Every round half the teams are eliminated.

y=64(2)xy=64\left(2\right)^x

y=64(12)2y=64\left(\frac{1}{2}\right)^2

y=64(12)xy=64\left(\frac{1}{2}\right)^x

y=64(2)x2y=64\left(2\right)^{\frac{x}{2}}

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The money in your bank account starts with $50,000 and increases at a rate of 5.2%. Find the value of your investment after 20 years.

1432.20

137811.29

46023.50

53680.45

Tags

CCSS.HSF.BF.A.2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The population in the town of Chicken, Alaska is increasing by 5% each year. Currently, there are 1,500 people in the town. How many people are going to be in the town in 10 years?

2443

1670

898

2

Tags

CCSS.HSF-LE.A.1C

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A population of 1500 deer decreases by 1.5% per year. At the end of 10 years, there will be approximately 1290 deer in the population.


Which function can be used to determine the number of deer, y, in this population at the end of t years?

y=1500(10.015)ty=1500(1-0.015)^t

y=1500(0.015)ty=1500(0.015)^t

y=1500(1+0.015)ty=1500(1+0.015)^t

y=1500(1.5)ty=1500(1.5)^t

Tags

CCSS.HSF.LE.A.2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

There were 417 cell phones sold at an electronics store in January. Since then, cell phone sales at this store have increased at a rate of 3.75% per month.


At this rate of growth, which function can be used to determine the monthly cell phone sales x months after January?

f(x)=417(10.0375)xf(x)=417(1-0.0375)^x

f(x)=417(13.75)xf(x)=417(1-3.75)^x

f(x)=417(1+0.0375)xf(x)=417(1+0.0375)^x

f(x)=417(1+3.75)xf(x)=417(1+3.75)^x

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

An antibiotic is introduced into a colony of 12,000 bacteria during a laboratory experiment. The colony is decreasing by 14.9% per minute.


Which function can be used to model the number of bacteria in the colony after x minutes?

f(x)=12000(1+14.9)xf(x)=12000(1+14.9)^x

f(x)=12000(114.9)xf(x)=12000(1-14.9)^x

f(x)=12000(1+0.149)xf(x)=12000(1+0.149)^x

f(x)=12000(10.149)xf(x)=12000(1-0.149)^x

Tags

CCSS.HSF.LE.A.2

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