Exploring Exponential Growth and Decay in Real Life
Authored by Anthony Clark
English, Mathematics
8th Grade
CCSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bacteria culture doubles in size every 3 hours. If there are initially 500 bacteria, how many will there be after 9 hours?
1000
4000
2000
3000
Tags
CCSS.HSF.LE.A.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A car's value decreases by half every 5 years. If the car is worth $20,000 now, what will its value be in 15 years?
$1,000
$2,500
$5,000
$10,000
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A tree grows at a rate of tripling its height every year. If it starts at 2 feet tall, how tall will it be after 3 years?
36 feet
6 feet
54 feet
18 feet
Tags
CCSS.HSF.BF.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A population of fish in a lake triples every year. If there are 200 fish now, how many will there be in 2 years?
400
1800
600
1200
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A radioactive substance decays to half its amount every 10 days. If you start with 80 grams, how much will remain after 30 days?
10 grams
40 grams
5 grams
20 grams
Tags
CCSS.HSF.LE.A.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A savings account doubles its balance every 4 years. If you deposit $1,000, how much will you have after 12 years?
16000
8000
2000
4000
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A certain species of plant doubles its number every month. If you start with 10 plants, how many will you have after 6 months?
320
640
80
20
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