Exponential Equations Half-Life Problems
9th Grade
•20 Qs
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Exponential Equations Half-Life Problems
Quiz
•
Mathematics
•
9th Grade
•
Hard
+1
Standards-aligned
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Due to its weakening steel industry, Canalave Town has been experiencing a population decline of 10% every year. The current population is 74,000 people. Assuming the trend continues, which equation projects the population in x years?
y = 74,000 (0.10)x
y = 74,000 (0.90)x
y = 74,000 (1.10)x
y = 74,000 (1.90)x
Tags
CCSS.HSF.LE.A.2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The number of research papers in Professor Sycamore area of expertise has been increasing by 5% every year. Given that 30,010 research papers were published this year. Assuming the trend continues, which equation projects the amount of research papers published in x years?
y = 30,010 (.05)x
y = 30,010 (1.05)x
y = 30,010 (.95)x
y = 30,010 (5)x
Tags
CCSS.HSF.LE.A.2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A city doubles its size every 64 years. If the population is currently 225,000, what will the population be in 128 years?
The population will be 225,000.
The population will be 450,000.
The population will be 900,000.
The population will be 1,800,000.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes?
15,008 grams.
7,504 grams
3,752 grams.
1,876 grams.
Tags
CCSS.HSF.LE.A.4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Estimate the half-life of the radioactive substance shown in the graph:
6 months
6 hours
1 year
1 minute
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
32 grams
16 grams
25 grams
31.24 grams
Tags
CCSS.HSF.LE.A.4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The half-life of chromium-51 is 28 days. If the sample contained 510 grams, how much chromium-51 would remain after 56 days?
127.5 g
164.3 g
23.45 g
287 g
Tags
CCSS.HSF.LE.A.4
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