Unit 4B: Writing and Solving Exponentials
Quiz
•
Mathematics
•
8th - 9th Grade
•
Medium
Standards-aligned
Gulannar Rattani
Used 3+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
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=5000(30)x
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Write the equation that represents the table below:
Tags
CCSS.HSF.LE.A.2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
You buy a new computer for $2100. The computer decreases by 50% annually. This is modeled by the equation
f(x) = 2100(.5)x
How much is it worth after 2 years?
$225
$325
$425
$525
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Solve: 7x = 49
x = 1
x = 2
x = 7
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Write an explicit rule for the sequence below.
5, 15, 45, . . .
an = an-1 x 3
an = 5(3)n-1
an = 3(5)n-1
an = 5 + (n-1)3
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the common ratio for the sequence below?
3, 15, 75...
12
1/5
5
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The population of Winnemucca, Nevada can be modeled by P(x) = 6191(1.04)t where t is the number of years since 1990. What was the population ten years later?
0 people
6,191 people
9,164 people
179,078 people
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