AnswersJHS-Algebra 1A full yearZero and Negative Exponents

Exponential Decay Functions Answers

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Which function represents exponential decay?

A
f(x) = (2)x
Option A
B
f(x) = ()x
Option B
C
f(x) = 3()x
Option C
D
f(x) = 2()x
Option D
3

Which graph represents exponential decay?

A
[Image: On a coordinate plane, a straight line has a negat...]
Option A
B
[Image: On a coordinate plane, a curve approaches y = 0 in...]
Option B
C
[Image: On a coordinate plane, a straight line has a posit...]
Option C
D
[Image: On a coordinate plane, a curve approaches y = 0 in...]
Option D
4

⇒ 18

Answer:

3

5

Which statements describe the function f(x) = 3()x? Check all that apply.Each successive output is the previous output divided by 3.As the domain values increase, the range values decrease. The graph of the function is linear, decreasing from left to right.Each successive output is the previous output multiplied by 3.The range of the function is all real numbers greater than 0. The domain of the function is all real numbers greater than 0.

Question illustration
A
Each successive output is the previous output divided by 3.
B
As the domain values increase, the range values decrease.
C
The graph of the function is linear, decreasing from left to right.
D
Each successive output is the previous output multiplied by 3.
E
The range of the function is all real numbers greater than 0.
F
The domain of the function is all real numbers greater than 0.
6

Which function represents the given graph?

A
f(x) = 100 · ()x
Option A
B
f(x) = (100 · )x
Option B
C
f(x) = 100 + x
Option C
D
f(x) = 100 · ()x
Option D
7

Which graph represents the function f(x) = ()–x

Question illustration
A
[Image: On a coordinate plane, an exponential function app...]
Option A
B
[Image: On a coordinate plane, an exponential function app...]
Option B
C
[Image: On a coordinate plane, an exponential function app...]
Option C
D
[Image: On a coordinate plane, an exponential function app...]
Option D

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